OhLED Themes (142-in-1)

142 monochrome colour themes for Visual Studio Code. Each theme draws the whole interface, the editor and the terminal with a single colour on a pure black background, in the style of classic CRT monitors: black pixels stay off on an OLED display, and everything else is that one colour at a few levels of brightness.

Features

• One colour per theme: every interface and syntax colour is derived from it.
• Syntax highlighting by brightness and weight instead of hue: comments and keywords are dimmed, the names of functions, types and tags are bold.
• Dimmed text keeps a contrast of at least 3:1 against the background in every theme, line numbers at least 2:1.
• The integrated terminal shows the ANSI colours as brightness levels of the same colour.

Install

The extension identifier is ophuscado.ohled-themes.

• In VS Code, open the Extensions view, search for OhLED Themes and select Install, or
• open Quick Open (Ctrl+P, Cmd+P on macOS) and run ext install ophuscado.ohled-themes, or
• from a shell: code --install-extension ophuscado.ohled-themes.

Then open the Command Palette (Ctrl+Shift+P, Cmd+Shift+P on macOS), run Preferences: Color Theme and pick a theme. The same choice in settings.json:

{ "workbench.colorTheme": "OhLED_Green" }

Themes

A theme is listed in the picker as OhLED_ followed by its name below, for example OhLED_AliceBlue. The background is always #000000.

Build from source

Node.js 22 or later is required.

npm ci
npm run build    # themes/*.json, contributes.themes and the list above
npm run package  # builds, then writes ohled-themes-<version>.vsix

• config.themes in package.json maps each theme name to its colour.
• src/crt.js is the template that derives a full theme from one colour.
• src/build.js generates one file per theme and keeps package.json and the list in this file in step with config.themes.

To add or change a theme, edit config.themes and run npm run build.

License

MIT, see LICENSE.