Chalkboard Colour Theme

Researches have revealed that green is the color that gives a calming effect for the eyes. The green color also avoids the eyes from getting fatigued.

A dark theme built on chalkboard green — calm, readable, and easy on the eyes in any light. Colour is used deliberately to distinguish language constructs, not just to decorate.

What's covered

Languages: JavaScript, TypeScript, TSX/JSX, PHP, Python, CSS, SCSS, HTML, Markdown, YAML, TOML, Shell/Bash, Dockerfile, Rust, JSON, XML, Regex

Agentic / CLI: Shell variables, flags, pipes, heredocs, subshells — all distinctly coloured. YAML keys vs values distinguished so GitHub Actions, MCP configs, and Copilot instruction files are easy to read at a glance. Terminal ANSI colours are tuned to the chalk palette so git diff, npm, and agent tool output all stay on-theme.

Workbench: Sidebar, activity bar, status bar, tabs, panels, terminal, breadcrumbs, diffs, and git decorations — all using green tones derived from the chalkboard background.

Semantic highlighting: LSP-powered token colours for TypeScript types, Rust lifetimes, Python self, decorators, and more.

Colour palette

Loosely based on colours available in a real chalk set:

Design principles

• Colours work with the green background with enough contrast to distinguish constructs
• Works in low light and bright light environments
• Helps reduce reflection on glass screens
• Similar colours used for similar syntax constructs across languages
• Limited palette — not too busy

Screenshots