Your eyes will :heart: you.

Preview

Installation

Install Stylus for either Firefox, Chrome or Opera and then install the style using one of these methods:

📦 Install the usercss which supports automatic updates and customization.
📦 Install GitHub-Dark Script which supports automatic updates and customization. Refer to its README.
📦 Install manually from GitHub with no customization, but useful for development. The style is in Mozilla format.
📦 Install via custom build with customization from configuration file. Refer to this wiki page.

For Safari, the only alternative is to install Cascadea along with our non-usercss version of GitHub-Dark; but you'll be stuck with no customization options unless you make a custom build of our style. Also see issue #808.

Additional Userstyles

⚙️ GitHub-FixedHeader
⚙️ GitHub-Selected-Tab-Color
⚙️ GitHub-code-wrap
⚙️ GitHub-tab-size
⚙️ GitHub-Commit-Limit
⚙️ GitHub-Community-Dark
⚙️ GitHub-Compact-Feed
⚙️ GitHub-Feed-Icons
⚙️ Overlay-Scrollbars
⚙️ GitHub-Sticky-Sidebar

Supported GitHub Addons

💾 GitHub Awesome Autocomplete
💾 GitHub Notifications Dropdown
💾 GitHub Polls
💾 Lovely forks
💾 npmhub
💾 Octotree
💾 OctoLinker
💾 Refined GitHub
💾 ZenHub

Available Syntax Highlighting Themes (Demo)

Theme	GitHub	CodeMirror	Jupyter
Ambiance	✔️	✔️	❌
Base16 Ocean Dark	❌	✔️	✔️
Chaos	✔️	❌	❌
Clouds Midnight	✔️	❌	❌
Cobalt	✔️	✔️	❌
Dracula	❌	✔️	✔️
GitHub Dark	✔️	❌	✔️
Idle Fingers	✔️	❌	✔️
Kr Theme	✔️	❌	❌
Material	🚧	✔️	❌
Merbivore	✔️	❌	❌
Merbivore Soft	✔️	❌	❌
Mono Industrial	✔️	❌	❌
Mono Industrial Clear	✔️	❌	❌
Monokai	✔️	✔️	✔️
Monokai Spacegray Eighties	✔️	✔️	✔️
Obsidian	✔️	❌	✔️
One Dark	✔️	✔️	❌
Pastel on Dark	✔️	✔️	✔️
Railscasts	✔️	✔️	✔️
Solarized Dark	✔️	✔️	✔️
Terminal	✔️	❌	❌
Tomorrow Night	✔️	❌	✔️
Tomorrow Night Blue	✔️	❌	✔️
Tomorrow Night Bright	✔️	✔️	✔️
Tomorrow Night Eighties	✔️	✔️	✔️
Twilight (default)	✔️	✔️	✔️
Vibrant Ink	✔️	✔️	❌

• Support for Codemirror and Jupyter notebook syntax highlighting themes as listed above.
• Please provide a pull request if you have or want to create a missing theme, or help complete the theme(s) designated with a construction symbol (🚧).

Notes

• If you're using a custom domain for GitHub Enterprise, be sure to include it through a @-moz-document rule (Firefox) or add it to the Applies to section in (Chrome).

Contributions

If you would like to contribute to this repository, please...

1. 👓 Read the contribution guidelines.
2. Fork or download this repository.
3. 👌 Create a pull request!

Development

To develop, first install Node.js, install dependencies via npm install after which you can use the various grunt tasks available:

• npx grunt: The default task builds a custom theme using a provided build.json file. See the wiki for details.
• npx grunt min: Same as grunt, but outputs a minified style.
• npx grunt usercss: Build a Usercss style.
• npx grunt themes: Parse all theme files and combine them into minified styles in the themes directory.
• npx grunt clean: Reformat github-dark.css to conform the style guide.
• npx grunt lint: Run Stylelint on github-dark.css.
• npx grunt authors: Regenerate the AUTHORS file based on git history.
• npx grunt imagemin: Minify all images present in the image directory.
• npx grunt generate: Regenerate auto-generated CSS rules based on GitHub's stylesheet. Run this regularly.
• npx grunt patch: Increment the version on the patch version number, update headers and create a commit.
• npx grunt minor: Increment the version on the minor version number, update headers and create a commit.
• npx grunt major: Increment the version on the major version number, update headers and create a commit.
• npx grunt update: Update and install dependencies.

Thanks to all that have contributed so far!

And thanks for the shoutout on the JS Party podcast!