CT Language Support for Visual Studio Code

Syntax highlighting for the CT color transformation language.

The CT DSL is a domain-specific language designed for authoring, transforming, and compiling color schemes across arbitrary target formats.

Showcase

For a fully working example, see cascara-retro-theme's source code. The cascara-retro-theme project uses CT to produce themes for Visual Studio Code, Ghostty, and iTerm2 from a single source set. Additionally, VSIX Gradle Plugin is used by cascara-retro-theme to create the VSIX pacakge for its Visual Studio Code theme.

Theme Screenshots

Multiple app themes from one source set:

Multiple Visual Studio Code theme variations from one source set:

CT Features

Dynamic Color Transformations

Programmatic color manipulation including HSV/HSBA lerping, brightness/saturation scaling, and RGBA blending.

Static Function Imports

Import static methods from custom Java classes to use as transform functions in CT.

Resource and File Imports

Module structures using standard file paths and embedded resource schemes like res://ghostty.ct via cascara-common-io.

Format-Agnostic Outputs

Target definition parsing to emit theme configurations for VS Code, Ghostty, iTerm2, and other application formats from a single source pipeline.

See Also

• CT Language Reference
• CT on Hithub
• CT Gradle Plugin
• VSIX Gradle Plugin

Installation

1. Open Visual Studio Code
2. Launch the Extension Marketplace (Ctrl+Shift+X or Cmd+Shift+X)
3. Search for Cascara CT Language
4. Click Install

License

CT Language Support is released under the MIT license, which grants the following permissions:

• Commercial use
• Distribution
• Modification
• Private use

For more convoluted language, see the LICENSE.md