diff --git a/README.md b/README.md
index a56e64cc..50c7b8ab 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ This repository is organized as a Rust workspace and contains several components
   - **[prometeu-core](./crates/prometeu-core)**: The logical core, VM, and internal OS.
   - **[prometeu-runtime-desktop](crates/prometeu-runtime-desktop)**: Host for execution on Desktop systems.
 - **[docs/](./docs)**: Technical documentation and system specifications.
-- **[devtools-protocol/](./devtools-protocol)**: Definition of the communication protocol for development tools.
+- **[devtools-protocol/](devtools)**: Definition of the communication protocol for development tools.
 - **[test-cartridges/](./test-cartridges)**: Cartridge examples and test suites.
 
 ---
diff --git a/crates/prometeu-compiler/src/codegen/codegen.rs b/crates/prometeu-compiler/src/codegen/codegen.rs
index 1aeaccd3..380e36c7 100644
--- a/crates/prometeu-compiler/src/codegen/codegen.rs
+++ b/crates/prometeu-compiler/src/codegen/codegen.rs
@@ -10,6 +10,7 @@ use crate::codegen::ast_util;
 use prometeu_core::prometeu_os::Syscall;
 use std::collections::HashMap;
 use prometeu_bytecode::asm;
+use prometeu_core::model::Color;
 
 pub struct Codegen {
     file_name: String,
@@ -294,14 +295,18 @@ impl Codegen {
                 
                 if full_name.to_lowercase().starts_with("color.") {
                     match full_name.to_lowercase().as_str() {
-                        "color.black" => self.emit_op(OpCode::PushI32, vec![Operand::I32(0x0000)], member.span),
-                        "color.white" => self.emit_op(OpCode::PushI32, vec![Operand::I32(0xffff)], member.span),
-                        "color.red" => self.emit_op(OpCode::PushI32, vec![Operand::I32(0xf800)], member.span),
-                        "color.green" => self.emit_op(OpCode::PushI32, vec![Operand::I32(0x07e0)], member.span),
-                        "color.blue" => self.emit_op(OpCode::PushI32, vec![Operand::I32(0x001f)], member.span),
-                        "color.yellow" => self.emit_op(OpCode::PushI32, vec![Operand::I32(0xffe0)], member.span),
-                        "color.cyan" => self.emit_op(OpCode::PushI32, vec![Operand::I32(0x07ff)], member.span),
-                        "color.magenta" => self.emit_op(OpCode::PushI32, vec![Operand::I32(0xf81f)], member.span),
+                        "color.black" => self.emit_op(OpCode::PushI32, vec![Operand::I32(Color::BLACK.hex())], member.span),
+                        "color.white" => self.emit_op(OpCode::PushI32, vec![Operand::I32(Color::WHITE.hex())], member.span),
+                        "color.red" => self.emit_op(OpCode::PushI32, vec![Operand::I32(Color::RED.hex())], member.span),
+                        "color.green" => self.emit_op(OpCode::PushI32, vec![Operand::I32(Color::GREEN.hex())], member.span),
+                        "color.blue" => self.emit_op(OpCode::PushI32, vec![Operand::I32(Color::BLUE.hex())], member.span),
+                        "color.yellow" => self.emit_op(OpCode::PushI32, vec![Operand::I32(Color::YELLOW.hex())], member.span),
+                        "color.cyan" => self.emit_op(OpCode::PushI32, vec![Operand::I32(Color::CYAN.hex())], member.span),
+                        "color.gray" | "color.grey" => self.emit_op(OpCode::PushI32, vec![Operand::I32(Color::GRAY.hex())], member.span),
+                        "color.orange" => self.emit_op(OpCode::PushI32, vec![Operand::I32(Color::ORANGE.hex())], member.span),
+                        "color.indigo" => self.emit_op(OpCode::PushI32, vec![Operand::I32(Color::INDIGO.hex())], member.span),
+                        "color.magenta" => self.emit_op(OpCode::PushI32, vec![Operand::I32(Color::MAGENTA.hex())], member.span),
+                        "color.colorKey" | "color.color_key" => self.emit_op(OpCode::PushI32, vec![Operand::I32(Color::COLOR_KEY.hex())], member.span),
                         _ => return Err(anyhow!("Unsupported color constant: {} at {:?}", full_name, member.span)),
                     }
                 } else if full_name.to_lowercase().starts_with("pad.") {
diff --git a/crates/prometeu-core/src/model/color.rs b/crates/prometeu-core/src/model/color.rs
index 3d211636..06d2a25e 100644
--- a/crates/prometeu-core/src/model/color.rs
+++ b/crates/prometeu-core/src/model/color.rs
@@ -60,4 +60,9 @@ impl Color {
     pub const fn raw(self) -> u16 {
         self.0
     }
+
+    pub const fn hex(self) -> i32 {
+        self.0 as i32
+    }
+
 }
diff --git a/crates/prometeu/Cargo.toml b/crates/prometeu/Cargo.toml
index 06466feb..6f488fcb 100644
--- a/crates/prometeu/Cargo.toml
+++ b/crates/prometeu/Cargo.toml
@@ -21,7 +21,8 @@ path = "src/bin/prometeuc.rs"
 dist = true
 include = [
     "../../VERSION.txt",
-    "../../dist-staging/devtools-protocol"
+    "../../dist-staging/devtools/debugger-protocol",
+    "../../dist-staging/devtools/prometeu-sdk"
 ]
 
 [dependencies]
diff --git a/devtools-protocol/README.md b/devtools/debugger-protocol/README.md
similarity index 92%
rename from devtools-protocol/README.md
rename to devtools/debugger-protocol/README.md
index d4a2d064..b659d7b3 100644
--- a/devtools-protocol/README.md
+++ b/devtools/debugger-protocol/README.md
@@ -8,9 +8,9 @@ The protocol is based on JSON, sent via a transport connection (usually TCP). Ea
 
 ## Structure
 
-- **[protocol.json](./protocol.json)**: Formal definition of the protocol in JSON format.
+- **[protocol.json](protocol.json)**: Formal definition of the protocol in JSON format.
 - **[protocol.md](README.md)**: Human-readable documentation describing commands, events, and types.
-- **[examples/](./examples)**: Examples of message flows (handshake, breakpoints, etc.) in JSONL format.
+- **[examples/](examples)**: Examples of message flows (handshake, breakpoints, etc.) in JSONL format.
 
 ## Versioning
 
diff --git a/devtools-protocol/examples/basic_session.jsonl b/devtools/debugger-protocol/examples/basic_session.jsonl
similarity index 100%
rename from devtools-protocol/examples/basic_session.jsonl
rename to devtools/debugger-protocol/examples/basic_session.jsonl
diff --git a/devtools-protocol/examples/breakpoint_flow.jsonl b/devtools/debugger-protocol/examples/breakpoint_flow.jsonl
similarity index 100%
rename from devtools-protocol/examples/breakpoint_flow.jsonl
rename to devtools/debugger-protocol/examples/breakpoint_flow.jsonl
diff --git a/devtools-protocol/examples/handshake.jsonl b/devtools/debugger-protocol/examples/handshake.jsonl
similarity index 100%
rename from devtools-protocol/examples/handshake.jsonl
rename to devtools/debugger-protocol/examples/handshake.jsonl
diff --git a/devtools-protocol/protocol.json b/devtools/debugger-protocol/protocol.json
similarity index 100%
rename from devtools-protocol/protocol.json
rename to devtools/debugger-protocol/protocol.json
diff --git a/test-cartridges/color-square/dev/prometeu-sdk/package.json b/devtools/prometeu-sdk/package.json
similarity index 100%
rename from test-cartridges/color-square/dev/prometeu-sdk/package.json
rename to devtools/prometeu-sdk/package.json
diff --git a/test-cartridges/color-square/dev/prometeu-sdk/src/audio.ts b/devtools/prometeu-sdk/src/audio.ts
similarity index 100%
rename from test-cartridges/color-square/dev/prometeu-sdk/src/audio.ts
rename to devtools/prometeu-sdk/src/audio.ts
diff --git a/test-cartridges/color-square/dev/prometeu-sdk/src/color.ts b/devtools/prometeu-sdk/src/color.ts
similarity index 95%
rename from test-cartridges/color-square/dev/prometeu-sdk/src/color.ts
rename to devtools/prometeu-sdk/src/color.ts
index 869b97a6..6269dbb0 100644
--- a/test-cartridges/color-square/dev/prometeu-sdk/src/color.ts
+++ b/devtools/prometeu-sdk/src/color.ts
@@ -13,6 +13,7 @@ export const Color: Prometeu.Color = {
     yellow: 0xffe0 as Color565,
     cyan: 0x07ff as Color565,
     magenta: 0xf81f as Color565,
+    indigo: 0x4810 as Color565,
 
     rgb(r: number, g: number, b: number): Color565 {
         r = clamp8(r); g = clamp8(g); b = clamp8(b);
diff --git a/test-cartridges/color-square/dev/prometeu-sdk/src/fs.ts b/devtools/prometeu-sdk/src/fs.ts
similarity index 100%
rename from test-cartridges/color-square/dev/prometeu-sdk/src/fs.ts
rename to devtools/prometeu-sdk/src/fs.ts
diff --git a/test-cartridges/color-square/dev/prometeu-sdk/src/gfx.ts b/devtools/prometeu-sdk/src/gfx.ts
similarity index 100%
rename from test-cartridges/color-square/dev/prometeu-sdk/src/gfx.ts
rename to devtools/prometeu-sdk/src/gfx.ts
diff --git a/test-cartridges/color-square/dev/prometeu-sdk/src/index.ts b/devtools/prometeu-sdk/src/index.ts
similarity index 100%
rename from test-cartridges/color-square/dev/prometeu-sdk/src/index.ts
rename to devtools/prometeu-sdk/src/index.ts
diff --git a/test-cartridges/color-square/dev/prometeu-sdk/src/input.ts b/devtools/prometeu-sdk/src/input.ts
similarity index 100%
rename from test-cartridges/color-square/dev/prometeu-sdk/src/input.ts
rename to devtools/prometeu-sdk/src/input.ts
diff --git a/test-cartridges/color-square/dev/prometeu-sdk/src/log.ts b/devtools/prometeu-sdk/src/log.ts
similarity index 100%
rename from test-cartridges/color-square/dev/prometeu-sdk/src/log.ts
rename to devtools/prometeu-sdk/src/log.ts
diff --git a/test-cartridges/color-square/dev/prometeu-sdk/src/system.ts b/devtools/prometeu-sdk/src/system.ts
similarity index 100%
rename from test-cartridges/color-square/dev/prometeu-sdk/src/system.ts
rename to devtools/prometeu-sdk/src/system.ts
diff --git a/test-cartridges/color-square/dev/prometeu-sdk/tsconfig.json b/devtools/prometeu-sdk/tsconfig.json
similarity index 100%
rename from test-cartridges/color-square/dev/prometeu-sdk/tsconfig.json
rename to devtools/prometeu-sdk/tsconfig.json
diff --git a/test-cartridges/color-square/dev/prometeu-sdk/types/index.d.ts b/devtools/prometeu-sdk/types/index.d.ts
similarity index 98%
rename from test-cartridges/color-square/dev/prometeu-sdk/types/index.d.ts
rename to devtools/prometeu-sdk/types/index.d.ts
index 050c7a54..0af34f22 100644
--- a/test-cartridges/color-square/dev/prometeu-sdk/types/index.d.ts
+++ b/devtools/prometeu-sdk/types/index.d.ts
@@ -50,6 +50,7 @@ declare global {
             readonly yellow: Color565;
             readonly cyan: Color565;
             readonly magenta: Color565;
+            readonly indigo: Color565;
             rgb(r: number, g: number, b: number): Color565;
         }
 
diff --git a/docs/README.md b/docs/README.md
index c59c8dff..620cd2fe 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -11,5 +11,5 @@ Detailed documentation on system architecture, cartridge format, VM instruction
 ### 🐞 [Debugger](./debugger)
 Documentation on debugging tools and how to integrate new tools into the ecosystem.
 
-### 🔌 [DevTools Protocol](../devtools-protocol)
+### 🔌 [DevTools Protocol](../devtools)
 Definition of the communication protocol used for real-time debugging and inspection.
diff --git a/scripts/clean-all.sh b/scripts/clean-all.sh
new file mode 100755
index 00000000..71ce3a26
--- /dev/null
+++ b/scripts/clean-all.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+set -euo pipefail
+
+cargo clean
+rm -rf dist-staging
\ No newline at end of file
diff --git a/scripts/local-dist.sh b/scripts/local-dist.sh
index 78ad400a..45dd1b06 100755
--- a/scripts/local-dist.sh
+++ b/scripts/local-dist.sh
@@ -8,8 +8,16 @@ VERSION=$(cat VERSION.txt)
 
 # Prepare staging for SDK extra files
 echo "Preparing dist-staging..."
-mkdir -p dist-staging/devtools-protocol
-cp devtools-protocol/protocol.json dist-staging/devtools-protocol/
+rm -rf dist-staging/devtools/debugger-protocol
+rm -rf dist-staging/devtools/prometeu-sdk
+
+mkdir -p dist-staging/devtools/debugger-protocol
+mkdir -p dist-staging/devtools/prometeu-sdk
+
+cp devtools/debugger-protocol/protocol.json dist-staging/devtools/debugger-protocol/
+cp -R devtools/prometeu-sdk dist-staging/devtools
+cp VERSION.txt dist-staging/devtools/debugger-protocol/VERSION.txt
+cp VERSION.txt dist-staging/devtools/prometeu-sdk/VERSION.txt
 
 # Clean and prepare the version-specific directory
 echo "Cleaning dist-staging/stable/$VERSION..."
diff --git a/test-cartridges/color-square/cartridge/program.pbc b/test-cartridges/color-square/cartridge/program.pbc
index 8ade8115..17424bfb 100644
Binary files a/test-cartridges/color-square/cartridge/program.pbc and b/test-cartridges/color-square/cartridge/program.pbc differ
diff --git a/test-cartridges/color-square/dev/build/program.disasm.txt b/test-cartridges/color-square/dev/build/program.disasm.txt
index e505a686..57dbbe4a 100644
--- a/test-cartridges/color-square/dev/build/program.disasm.txt
+++ b/test-cartridges/color-square/dev/build/program.disasm.txt
@@ -2,44 +2,44 @@
 0000000A  Pop 
 0000000C  FrameSync 
 0000000E  Jmp U32(0)
-00000014  PushI32 U32(0) ; test-cartridges/color-square/dev/src/main.ts:2
+00000014  PushI32 U32(18448) ; test-cartridges/color-square/dev/src/main.ts:2
 0000001A  Syscall U32(4097) ; test-cartridges/color-square/dev/src/main.ts:2
 00000020  Pop  ; test-cartridges/color-square/dev/src/main.ts:2
-00000022  PushI32 U32(10) ; test-cartridges/color-square/dev/src/main.ts:3
-00000028  PushI32 U32(10) ; test-cartridges/color-square/dev/src/main.ts:3
-0000002E  PushI32 U32(50) ; test-cartridges/color-square/dev/src/main.ts:3
-00000034  PushI32 U32(50) ; test-cartridges/color-square/dev/src/main.ts:3
-0000003A  PushI32 U32(63488) ; test-cartridges/color-square/dev/src/main.ts:3
-00000040  Syscall U32(4098) ; test-cartridges/color-square/dev/src/main.ts:3
-00000046  Pop  ; test-cartridges/color-square/dev/src/main.ts:3
-00000048  PushI32 U32(0) ; test-cartridges/color-square/dev/src/main.ts:4
-0000004E  PushI32 U32(0) ; test-cartridges/color-square/dev/src/main.ts:4
-00000054  PushI32 U32(128) ; test-cartridges/color-square/dev/src/main.ts:4
-0000005A  PushI32 U32(128) ; test-cartridges/color-square/dev/src/main.ts:4
-00000060  PushI32 U32(65535) ; test-cartridges/color-square/dev/src/main.ts:4
-00000066  Syscall U32(4099) ; test-cartridges/color-square/dev/src/main.ts:4
-0000006C  Pop  ; test-cartridges/color-square/dev/src/main.ts:4
-0000006E  PushI32 U32(64) ; test-cartridges/color-square/dev/src/main.ts:5
-00000074  PushI32 U32(64) ; test-cartridges/color-square/dev/src/main.ts:5
-0000007A  PushI32 U32(20) ; test-cartridges/color-square/dev/src/main.ts:5
-00000080  PushI32 U32(31) ; test-cartridges/color-square/dev/src/main.ts:5
-00000086  Syscall U32(4100) ; test-cartridges/color-square/dev/src/main.ts:5
-0000008C  Pop  ; test-cartridges/color-square/dev/src/main.ts:5
-0000008E  PushI32 U32(100) ; test-cartridges/color-square/dev/src/main.ts:6
-00000094  PushI32 U32(100) ; test-cartridges/color-square/dev/src/main.ts:6
-0000009A  PushI32 U32(10) ; test-cartridges/color-square/dev/src/main.ts:6
-000000A0  PushI32 U32(2016) ; test-cartridges/color-square/dev/src/main.ts:6
-000000A6  PushI32 U32(65504) ; test-cartridges/color-square/dev/src/main.ts:6
-000000AC  Syscall U32(4101) ; test-cartridges/color-square/dev/src/main.ts:6
-000000B2  Pop  ; test-cartridges/color-square/dev/src/main.ts:6
-000000B4  PushI32 U32(20) ; test-cartridges/color-square/dev/src/main.ts:7
-000000BA  PushI32 U32(100) ; test-cartridges/color-square/dev/src/main.ts:7
-000000C0  PushI32 U32(30) ; test-cartridges/color-square/dev/src/main.ts:7
-000000C6  PushI32 U32(30) ; test-cartridges/color-square/dev/src/main.ts:7
-000000CC  PushI32 U32(2047) ; test-cartridges/color-square/dev/src/main.ts:7
-000000D2  PushI32 U32(63519) ; test-cartridges/color-square/dev/src/main.ts:7
-000000D8  Syscall U32(4102) ; test-cartridges/color-square/dev/src/main.ts:7
-000000DE  Pop  ; test-cartridges/color-square/dev/src/main.ts:7
+00000022  PushI32 U32(10) ; test-cartridges/color-square/dev/src/main.ts:4
+00000028  PushI32 U32(10) ; test-cartridges/color-square/dev/src/main.ts:4
+0000002E  PushI32 U32(50) ; test-cartridges/color-square/dev/src/main.ts:4
+00000034  PushI32 U32(50) ; test-cartridges/color-square/dev/src/main.ts:4
+0000003A  PushI32 U32(63488) ; test-cartridges/color-square/dev/src/main.ts:4
+00000040  Syscall U32(4098) ; test-cartridges/color-square/dev/src/main.ts:4
+00000046  Pop  ; test-cartridges/color-square/dev/src/main.ts:4
+00000048  PushI32 U32(0) ; test-cartridges/color-square/dev/src/main.ts:5
+0000004E  PushI32 U32(0) ; test-cartridges/color-square/dev/src/main.ts:5
+00000054  PushI32 U32(128) ; test-cartridges/color-square/dev/src/main.ts:5
+0000005A  PushI32 U32(128) ; test-cartridges/color-square/dev/src/main.ts:5
+00000060  PushI32 U32(65535) ; test-cartridges/color-square/dev/src/main.ts:5
+00000066  Syscall U32(4099) ; test-cartridges/color-square/dev/src/main.ts:5
+0000006C  Pop  ; test-cartridges/color-square/dev/src/main.ts:5
+0000006E  PushI32 U32(64) ; test-cartridges/color-square/dev/src/main.ts:6
+00000074  PushI32 U32(64) ; test-cartridges/color-square/dev/src/main.ts:6
+0000007A  PushI32 U32(20) ; test-cartridges/color-square/dev/src/main.ts:6
+00000080  PushI32 U32(31) ; test-cartridges/color-square/dev/src/main.ts:6
+00000086  Syscall U32(4100) ; test-cartridges/color-square/dev/src/main.ts:6
+0000008C  Pop  ; test-cartridges/color-square/dev/src/main.ts:6
+0000008E  PushI32 U32(100) ; test-cartridges/color-square/dev/src/main.ts:7
+00000094  PushI32 U32(100) ; test-cartridges/color-square/dev/src/main.ts:7
+0000009A  PushI32 U32(10) ; test-cartridges/color-square/dev/src/main.ts:7
+000000A0  PushI32 U32(2016) ; test-cartridges/color-square/dev/src/main.ts:7
+000000A6  PushI32 U32(65504) ; test-cartridges/color-square/dev/src/main.ts:7
+000000AC  Syscall U32(4101) ; test-cartridges/color-square/dev/src/main.ts:7
+000000B2  Pop  ; test-cartridges/color-square/dev/src/main.ts:7
+000000B4  PushI32 U32(20) ; test-cartridges/color-square/dev/src/main.ts:8
+000000BA  PushI32 U32(100) ; test-cartridges/color-square/dev/src/main.ts:8
+000000C0  PushI32 U32(30) ; test-cartridges/color-square/dev/src/main.ts:8
+000000C6  PushI32 U32(30) ; test-cartridges/color-square/dev/src/main.ts:8
+000000CC  PushI32 U32(2047) ; test-cartridges/color-square/dev/src/main.ts:8
+000000D2  PushI32 U32(63519) ; test-cartridges/color-square/dev/src/main.ts:8
+000000D8  Syscall U32(4102) ; test-cartridges/color-square/dev/src/main.ts:8
+000000DE  Pop  ; test-cartridges/color-square/dev/src/main.ts:8
 000000E0  PushI32 U32(0) ; test-cartridges/color-square/dev/src/main.ts:10
 000000E6  Syscall U32(8193) ; test-cartridges/color-square/dev/src/main.ts:10
 000000EC  JmpIfFalse U32(268) ; test-cartridges/color-square/dev/src/main.ts:10
@@ -59,60 +59,60 @@
 0000013C  Syscall U32(12289) ; test-cartridges/color-square/dev/src/main.ts:15
 00000142  Pop  ; test-cartridges/color-square/dev/src/main.ts:15
 00000144  Jmp U32(330)
-0000014A  Syscall U32(8451) ; test-cartridges/color-square/dev/src/main.ts:19
-00000150  JmpIfFalse U32(380) ; test-cartridges/color-square/dev/src/main.ts:19
-00000156  Syscall U32(8449) ; test-cartridges/color-square/dev/src/main.ts:20
-0000015C  Syscall U32(8450) ; test-cartridges/color-square/dev/src/main.ts:20
-00000162  PushI32 U32(5) ; test-cartridges/color-square/dev/src/main.ts:20
-00000168  PushI32 U32(65535) ; test-cartridges/color-square/dev/src/main.ts:20
-0000016E  Syscall U32(4100) ; test-cartridges/color-square/dev/src/main.ts:20
-00000174  Pop  ; test-cartridges/color-square/dev/src/main.ts:20
+0000014A  Syscall U32(8451) ; test-cartridges/color-square/dev/src/main.ts:18
+00000150  JmpIfFalse U32(380) ; test-cartridges/color-square/dev/src/main.ts:18
+00000156  Syscall U32(8449) ; test-cartridges/color-square/dev/src/main.ts:19
+0000015C  Syscall U32(8450) ; test-cartridges/color-square/dev/src/main.ts:19
+00000162  PushI32 U32(5) ; test-cartridges/color-square/dev/src/main.ts:19
+00000168  PushI32 U32(65535) ; test-cartridges/color-square/dev/src/main.ts:19
+0000016E  Syscall U32(4100) ; test-cartridges/color-square/dev/src/main.ts:19
+00000174  Pop  ; test-cartridges/color-square/dev/src/main.ts:19
 00000176  Jmp U32(380)
-0000017C  PushConst U32(2) ; test-cartridges/color-square/dev/src/main.ts:24
-00000182  Syscall U32(16385) ; test-cartridges/color-square/dev/src/main.ts:24
-00000188  GetLocal U32(0) ; test-cartridges/color-square/dev/src/main.ts:25
-0000018E  PushI32 U32(0) ; test-cartridges/color-square/dev/src/main.ts:25
-00000194  Gte  ; test-cartridges/color-square/dev/src/main.ts:25
-00000196  JmpIfFalse U32(508) ; test-cartridges/color-square/dev/src/main.ts:25
-0000019C  GetLocal U32(0) ; test-cartridges/color-square/dev/src/main.ts:26
-000001A2  PushConst U32(3) ; test-cartridges/color-square/dev/src/main.ts:26
-000001A8  Syscall U32(16387) ; test-cartridges/color-square/dev/src/main.ts:26
-000001AE  Pop  ; test-cartridges/color-square/dev/src/main.ts:26
-000001B0  GetLocal U32(0) ; test-cartridges/color-square/dev/src/main.ts:27
-000001B6  Syscall U32(16386) ; test-cartridges/color-square/dev/src/main.ts:27
-000001BC  GetLocal U32(1) ; test-cartridges/color-square/dev/src/main.ts:28
-000001C2  JmpIfFalse U32(488) ; test-cartridges/color-square/dev/src/main.ts:28
-000001C8  PushI32 U32(2) ; test-cartridges/color-square/dev/src/main.ts:28
-000001CE  PushI32 U32(101) ; test-cartridges/color-square/dev/src/main.ts:28
-000001D4  GetLocal U32(1) ; test-cartridges/color-square/dev/src/main.ts:28
-000001DA  Syscall U32(20482) ; test-cartridges/color-square/dev/src/main.ts:28
-000001E0  Pop  ; test-cartridges/color-square/dev/src/main.ts:28
+0000017C  PushConst U32(2) ; test-cartridges/color-square/dev/src/main.ts:22
+00000182  Syscall U32(16385) ; test-cartridges/color-square/dev/src/main.ts:22
+00000188  GetLocal U32(0) ; test-cartridges/color-square/dev/src/main.ts:23
+0000018E  PushI32 U32(0) ; test-cartridges/color-square/dev/src/main.ts:23
+00000194  Gte  ; test-cartridges/color-square/dev/src/main.ts:23
+00000196  JmpIfFalse U32(508) ; test-cartridges/color-square/dev/src/main.ts:23
+0000019C  GetLocal U32(0) ; test-cartridges/color-square/dev/src/main.ts:24
+000001A2  PushConst U32(3) ; test-cartridges/color-square/dev/src/main.ts:24
+000001A8  Syscall U32(16387) ; test-cartridges/color-square/dev/src/main.ts:24
+000001AE  Pop  ; test-cartridges/color-square/dev/src/main.ts:24
+000001B0  GetLocal U32(0) ; test-cartridges/color-square/dev/src/main.ts:25
+000001B6  Syscall U32(16386) ; test-cartridges/color-square/dev/src/main.ts:25
+000001BC  GetLocal U32(1) ; test-cartridges/color-square/dev/src/main.ts:26
+000001C2  JmpIfFalse U32(488) ; test-cartridges/color-square/dev/src/main.ts:26
+000001C8  PushI32 U32(2) ; test-cartridges/color-square/dev/src/main.ts:26
+000001CE  PushI32 U32(101) ; test-cartridges/color-square/dev/src/main.ts:26
+000001D4  GetLocal U32(1) ; test-cartridges/color-square/dev/src/main.ts:26
+000001DA  Syscall U32(20482) ; test-cartridges/color-square/dev/src/main.ts:26
+000001E0  Pop  ; test-cartridges/color-square/dev/src/main.ts:26
 000001E2  Jmp U32(488)
-000001E8  GetLocal U32(0) ; test-cartridges/color-square/dev/src/main.ts:29
-000001EE  Syscall U32(16388) ; test-cartridges/color-square/dev/src/main.ts:29
-000001F4  Pop  ; test-cartridges/color-square/dev/src/main.ts:29
+000001E8  GetLocal U32(0) ; test-cartridges/color-square/dev/src/main.ts:27
+000001EE  Syscall U32(16388) ; test-cartridges/color-square/dev/src/main.ts:27
+000001F4  Pop  ; test-cartridges/color-square/dev/src/main.ts:27
 000001F6  Jmp U32(508)
-000001FC  PushI32 U32(255) ; test-cartridges/color-square/dev/src/main.ts:33
-00000202  PushI32 U32(3) ; test-cartridges/color-square/dev/src/main.ts:33
-00000208  Shr  ; test-cartridges/color-square/dev/src/main.ts:33
-0000020A  PushI32 U32(11) ; test-cartridges/color-square/dev/src/main.ts:33
-00000210  Shl  ; test-cartridges/color-square/dev/src/main.ts:33
-00000212  PushI32 U32(128) ; test-cartridges/color-square/dev/src/main.ts:33
-00000218  PushI32 U32(2) ; test-cartridges/color-square/dev/src/main.ts:33
-0000021E  Shr  ; test-cartridges/color-square/dev/src/main.ts:33
-00000220  PushI32 U32(5) ; test-cartridges/color-square/dev/src/main.ts:33
-00000226  Shl  ; test-cartridges/color-square/dev/src/main.ts:33
-00000228  BitOr  ; test-cartridges/color-square/dev/src/main.ts:33
-0000022A  PushI32 U32(0) ; test-cartridges/color-square/dev/src/main.ts:33
-00000230  PushI32 U32(3) ; test-cartridges/color-square/dev/src/main.ts:33
-00000236  Shr  ; test-cartridges/color-square/dev/src/main.ts:33
-00000238  BitOr  ; test-cartridges/color-square/dev/src/main.ts:33
-0000023A  PushI32 U32(0) ; test-cartridges/color-square/dev/src/main.ts:34
-00000240  PushI32 U32(0) ; test-cartridges/color-square/dev/src/main.ts:34
-00000246  PushI32 U32(5) ; test-cartridges/color-square/dev/src/main.ts:34
-0000024C  PushI32 U32(5) ; test-cartridges/color-square/dev/src/main.ts:34
-00000252  GetLocal U32(2) ; test-cartridges/color-square/dev/src/main.ts:34
-00000258  Syscall U32(4098) ; test-cartridges/color-square/dev/src/main.ts:34
-0000025E  Pop  ; test-cartridges/color-square/dev/src/main.ts:34
+000001FC  PushI32 U32(255) ; test-cartridges/color-square/dev/src/main.ts:30
+00000202  PushI32 U32(3) ; test-cartridges/color-square/dev/src/main.ts:30
+00000208  Shr  ; test-cartridges/color-square/dev/src/main.ts:30
+0000020A  PushI32 U32(11) ; test-cartridges/color-square/dev/src/main.ts:30
+00000210  Shl  ; test-cartridges/color-square/dev/src/main.ts:30
+00000212  PushI32 U32(128) ; test-cartridges/color-square/dev/src/main.ts:30
+00000218  PushI32 U32(2) ; test-cartridges/color-square/dev/src/main.ts:30
+0000021E  Shr  ; test-cartridges/color-square/dev/src/main.ts:30
+00000220  PushI32 U32(5) ; test-cartridges/color-square/dev/src/main.ts:30
+00000226  Shl  ; test-cartridges/color-square/dev/src/main.ts:30
+00000228  BitOr  ; test-cartridges/color-square/dev/src/main.ts:30
+0000022A  PushI32 U32(0) ; test-cartridges/color-square/dev/src/main.ts:30
+00000230  PushI32 U32(3) ; test-cartridges/color-square/dev/src/main.ts:30
+00000236  Shr  ; test-cartridges/color-square/dev/src/main.ts:30
+00000238  BitOr  ; test-cartridges/color-square/dev/src/main.ts:30
+0000023A  PushI32 U32(0) ; test-cartridges/color-square/dev/src/main.ts:31
+00000240  PushI32 U32(0) ; test-cartridges/color-square/dev/src/main.ts:31
+00000246  PushI32 U32(5) ; test-cartridges/color-square/dev/src/main.ts:31
+0000024C  PushI32 U32(5) ; test-cartridges/color-square/dev/src/main.ts:31
+00000252  GetLocal U32(2) ; test-cartridges/color-square/dev/src/main.ts:31
+00000258  Syscall U32(4098) ; test-cartridges/color-square/dev/src/main.ts:31
+0000025E  Pop  ; test-cartridges/color-square/dev/src/main.ts:31
 00000260  PushConst U32(0)
 00000266  Ret 
diff --git a/test-cartridges/color-square/dev/build/program.pbc b/test-cartridges/color-square/dev/build/program.pbc
index 8ade8115..17424bfb 100644
Binary files a/test-cartridges/color-square/dev/build/program.pbc and b/test-cartridges/color-square/dev/build/program.pbc differ
diff --git a/test-cartridges/color-square/dev/build/symbols.json b/test-cartridges/color-square/dev/build/symbols.json
index 7bb3b613..f5ac5c5d 100644
--- a/test-cartridges/color-square/dev/build/symbols.json
+++ b/test-cartridges/color-square/dev/build/symbols.json
@@ -20,211 +20,211 @@
   {
     "pc": 34,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 3,
+    "line": 4,
     "col": 16
   },
   {
     "pc": 40,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 3,
+    "line": 4,
     "col": 20
   },
   {
     "pc": 46,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 3,
+    "line": 4,
     "col": 24
   },
   {
     "pc": 52,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 3,
+    "line": 4,
     "col": 28
   },
   {
     "pc": 58,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 3,
+    "line": 4,
     "col": 32
   },
   {
     "pc": 64,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 3,
+    "line": 4,
     "col": 3
   },
   {
     "pc": 70,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 3,
+    "line": 4,
     "col": 3
   },
   {
     "pc": 72,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 4,
+    "line": 5,
     "col": 16
   },
   {
     "pc": 78,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 4,
+    "line": 5,
     "col": 19
   },
   {
     "pc": 84,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 4,
+    "line": 5,
     "col": 22
   },
   {
     "pc": 90,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 4,
+    "line": 5,
     "col": 27
   },
   {
     "pc": 96,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 4,
+    "line": 5,
     "col": 32
   },
   {
     "pc": 102,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 4,
+    "line": 5,
     "col": 3
   },
   {
     "pc": 108,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 4,
+    "line": 5,
     "col": 3
   },
   {
     "pc": 110,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 5,
+    "line": 6,
     "col": 18
   },
   {
     "pc": 116,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 5,
+    "line": 6,
     "col": 22
   },
   {
     "pc": 122,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 5,
+    "line": 6,
     "col": 26
   },
   {
     "pc": 128,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 5,
+    "line": 6,
     "col": 30
   },
   {
     "pc": 134,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 5,
+    "line": 6,
     "col": 3
   },
   {
     "pc": 140,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 5,
+    "line": 6,
     "col": 3
   },
   {
     "pc": 142,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 6,
+    "line": 7,
     "col": 16
   },
   {
     "pc": 148,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 6,
+    "line": 7,
     "col": 21
   },
   {
     "pc": 154,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 6,
+    "line": 7,
     "col": 26
   },
   {
     "pc": 160,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 6,
+    "line": 7,
     "col": 30
   },
   {
     "pc": 166,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 6,
+    "line": 7,
     "col": 43
   },
   {
     "pc": 172,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 6,
+    "line": 7,
     "col": 3
   },
   {
     "pc": 178,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 6,
+    "line": 7,
     "col": 3
   },
   {
     "pc": 180,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 7,
+    "line": 8,
     "col": 18
   },
   {
     "pc": 186,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 7,
+    "line": 8,
     "col": 22
   },
   {
     "pc": 192,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 7,
+    "line": 8,
     "col": 27
   },
   {
     "pc": 198,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 7,
+    "line": 8,
     "col": 31
   },
   {
     "pc": 204,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 7,
+    "line": 8,
     "col": 35
   },
   {
     "pc": 210,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 7,
+    "line": 8,
     "col": 47
   },
   {
     "pc": 216,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 7,
+    "line": 8,
     "col": 3
   },
   {
     "pc": 222,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 7,
+    "line": 8,
     "col": 3
   },
   {
@@ -332,313 +332,313 @@
   {
     "pc": 330,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 19,
+    "line": 18,
     "col": 7
   },
   {
     "pc": 336,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 19,
+    "line": 18,
     "col": 3
   },
   {
     "pc": 342,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 20,
+    "line": 19,
     "col": 22
   },
   {
     "pc": 348,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 20,
+    "line": 19,
     "col": 31
   },
   {
     "pc": 354,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 20,
+    "line": 19,
     "col": 40
   },
   {
     "pc": 360,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 20,
+    "line": 19,
     "col": 43
   },
   {
     "pc": 366,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 20,
+    "line": 19,
     "col": 7
   },
   {
     "pc": 372,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 20,
+    "line": 19,
     "col": 7
   },
   {
     "pc": 380,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 24,
+    "line": 22,
     "col": 19
   },
   {
     "pc": 386,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 24,
+    "line": 22,
     "col": 11
   },
   {
     "pc": 392,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 25,
+    "line": 23,
     "col": 7
   },
   {
     "pc": 398,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 25,
+    "line": 23,
     "col": 12
   },
   {
     "pc": 404,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 25,
+    "line": 23,
     "col": 7
   },
   {
     "pc": 406,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 25,
+    "line": 23,
     "col": 3
   },
   {
     "pc": 412,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 26,
+    "line": 24,
     "col": 16
   },
   {
     "pc": 418,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 26,
+    "line": 24,
     "col": 19
   },
   {
     "pc": 424,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 26,
+    "line": 24,
     "col": 7
   },
   {
     "pc": 430,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 26,
+    "line": 24,
     "col": 7
   },
   {
     "pc": 432,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 27,
+    "line": 25,
     "col": 29
   },
   {
     "pc": 438,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 27,
+    "line": 25,
     "col": 21
   },
   {
     "pc": 444,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 28,
+    "line": 26,
     "col": 11
   },
   {
     "pc": 450,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 28,
+    "line": 26,
     "col": 7
   },
   {
     "pc": 456,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 28,
+    "line": 26,
     "col": 33
   },
   {
     "pc": 462,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 28,
+    "line": 26,
     "col": 36
   },
   {
     "pc": 468,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 28,
+    "line": 26,
     "col": 41
   },
   {
     "pc": 474,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 28,
+    "line": 26,
     "col": 20
   },
   {
     "pc": 480,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 28,
+    "line": 26,
     "col": 20
   },
   {
     "pc": 488,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 29,
+    "line": 27,
     "col": 16
   },
   {
     "pc": 494,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 29,
+    "line": 27,
     "col": 7
   },
   {
     "pc": 500,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 29,
+    "line": 27,
     "col": 7
   },
   {
     "pc": 508,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 33,
+    "line": 30,
     "col": 21
   },
   {
     "pc": 514,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 33,
+    "line": 30,
     "col": 11
   },
   {
     "pc": 520,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 33,
+    "line": 30,
     "col": 11
   },
   {
     "pc": 522,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 33,
+    "line": 30,
     "col": 11
   },
   {
     "pc": 528,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 33,
+    "line": 30,
     "col": 11
   },
   {
     "pc": 530,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 33,
+    "line": 30,
     "col": 26
   },
   {
     "pc": 536,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 33,
+    "line": 30,
     "col": 11
   },
   {
     "pc": 542,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 33,
+    "line": 30,
     "col": 11
   },
   {
     "pc": 544,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 33,
+    "line": 30,
     "col": 11
   },
   {
     "pc": 550,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 33,
+    "line": 30,
     "col": 11
   },
   {
     "pc": 552,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 33,
+    "line": 30,
     "col": 11
   },
   {
     "pc": 554,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 33,
+    "line": 30,
     "col": 31
   },
   {
     "pc": 560,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 33,
+    "line": 30,
     "col": 11
   },
   {
     "pc": 566,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 33,
+    "line": 30,
     "col": 11
   },
   {
     "pc": 568,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 33,
+    "line": 30,
     "col": 11
   },
   {
     "pc": 570,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 34,
+    "line": 31,
     "col": 16
   },
   {
     "pc": 576,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 34,
+    "line": 31,
     "col": 19
   },
   {
     "pc": 582,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 34,
+    "line": 31,
     "col": 22
   },
   {
     "pc": 588,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 34,
+    "line": 31,
     "col": 25
   },
   {
     "pc": 594,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 34,
+    "line": 31,
     "col": 28
   },
   {
     "pc": 600,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 34,
+    "line": 31,
     "col": 3
   },
   {
     "pc": 606,
     "file": "test-cartridges/color-square/dev/src/main.ts",
-    "line": 34,
+    "line": 31,
     "col": 3
   }
 ]
\ No newline at end of file
diff --git a/test-cartridges/color-square/dev/prometeu-sdk b/test-cartridges/color-square/dev/prometeu-sdk
new file mode 120000
index 00000000..2cd47c91
--- /dev/null
+++ b/test-cartridges/color-square/dev/prometeu-sdk
@@ -0,0 +1 @@
+../../../devtools/prometeu-sdk
\ No newline at end of file
diff --git a/test-cartridges/color-square/dev/src/main.ts b/test-cartridges/color-square/dev/src/main.ts
index f9d55bed..3e80ef92 100644
--- a/test-cartridges/color-square/dev/src/main.ts
+++ b/test-cartridges/color-square/dev/src/main.ts
@@ -1,12 +1,12 @@
 export function tick(): void {
-  gfx.clear(color.black);
+  gfx.clear(color.indigo);
+
   gfx.fillRect(10, 10, 50, 50, color.red);
   gfx.drawLine(0, 0, 128, 128, color.white);
   gfx.drawCircle(64, 64, 20, color.blue);
   gfx.drawDisc(100, 100, 10, color.green, color.yellow);
   gfx.drawSquare(20, 100, 30, 30, color.cyan, color.magenta);
 
-  // Input
   if (pad.up.down) {
       log.write(2, "Up is down");
   }
@@ -14,13 +14,11 @@ export function tick(): void {
   if (pad.a.pressed) {
       audio.playSample(1, 0, 255, 128, 1.0);
   }
-  
-  // Touch
+
   if (touch.button.down) {
       gfx.drawCircle(touch.x, touch.y, 5, color.white);
   }
 
-  // PFs
   let h = fs.open("test.txt");
   if (h >= 0) {
       fs.write(h, "Hello Prometeu!");
@@ -29,7 +27,6 @@ export function tick(): void {
       fs.close(h);
   }
 
-  // PColor.rgb
   let c = color.rgb(255, 128, 0);
   gfx.fillRect(0, 0, 5, 5, c);
 }
\ No newline at end of file