Kiro Rider Light

A light color theme for VS Code and Kiro IDE inspired by JetBrains Rider Light.

Designed to feel light and clean while keeping syntax readable. Classes, functions, and keywords look the same whether you're in Kotlin, Java, TypeScript, or Python -- so switching between languages doesn't mean re-learning the color map.

Includes dedicated highlighting scopes for Kotlin LSP and basedpyright, with WCAG AA contrast ratios throughout.

Screenshots

• Kotlin
• Java
• TypeScript
• JavaScript
• Python
• Markdown
• YAML
• JSON
• HTML
• CSS

Features

• Works in VS Code and Kiro IDE
• Consistent syntax colors across Kotlin, Java, TypeScript, JavaScript, Python, Markdown, YAML, JSON, HTML, and CSS -- a class is always purple, a function is always green, regardless of language
• Dedicated scopes for Kotlin LSP and basedpyright so Kotlin and Python get proper semantic highlighting
• 17 syntax roles generated from an OKLCH harmony wheel, all passing WCAG AA (4.5:1) on white
• 465 UI colors covering editor, terminal, debug, testing, VCS, and more
• Full 16-color ANSI terminal palette at perceptually uniform lightness
• Python-based generator for easy customization

Syntax palette

Role	Color
Functions	Green
Types / Classes	Purple
Keywords	Blue
Fields / Properties	Teal
Strings	Brown
Numbers	Magenta
Comments	Muted green
Metadata / Annotations	Olive

Installation

Install from the VS Code Marketplace or Open VSX, or search for "Kiro Rider Light" in the Extensions view.

Or install a .vsix directly:

code --install-extension kiro-rider-light-0.1.0.vsix

Generator

The theme JSON is generated from Python source in theme_gen/. To regenerate after changes:

cd theme_gen
uv run main.py

This writes themes/Kiro Rider Light-color-theme.json and prints a summary of color/token/semantic counts.

Test locally

1. Open this folder in VS Code or Kiro
2. Press F5 to launch the Extension Development Host
3. In the new window: Cmd+K Cmd+T and select "Kiro Rider Light"

Contributing

Pull requests are welcome. Repository: github.com/Unril/kiro-rider-light

License

MIT