Themes

Built-in themes

Open Settings → Theme to switch between the built-in presets that ship with Run-Calc:

• System — follows your OS light / dark preference automatically.
• Light — a clean light background.
• Dark — a comfortable dark background.
• Light (High Contrast) — maximum contrast light theme for improved accessibility and visibility.
• Dark (High Contrast) — maximum contrast dark theme for improved accessibility and visibility.
• Custom — a theme you installed from the Theme Store.

Theme Store

Run-Calc can install any colour theme published on Open VSX. The Theme Store is built right into the app:

1. Open Settings → Theme Store.
2. Type a theme name in the search box — results appear as you type.
3. Click Preview to see the theme live without saving it.
4. Click Accept to keep the theme, or close the panel to revert the preview.
5. The accepted theme is saved automatically and persists across restarts.

Any theme you previously accepted is restored when you next open the app — no re-download is needed because the colour tokens are stored locally.

How custom themes work

Run-Calc reads a subset of VS Code colour tokens from the theme package and maps them to the editor surface. Tokens used include:

• Editor background and foreground
• Status bar background, foreground, and border
• Gutter background and line-number colours
• Syntax token colours for numbers, operators, variables, functions, constants, comments, and punctuation
• Link, error, and scroll-bar colours

Tokens not present in the theme package fall back to sensible defaults derived from the theme's declared base (dark or light).

Tips

• Search for popular names like One Dark Pro, Dracula, or Catppuccin to find well-known themes quickly.
• If a theme looks off in one area, try another variant from the same publisher — many themes publish separate dark and light editions.
• Switching back to System or Light / Dark does not delete your installed custom theme; it is still available under Custom.
• Font size is independent of the theme — adjust it with Ctrl/Cmd + =, Ctrl/Cmd + -, or Ctrl/Cmd + 0.