How to use
Install a userstyle manager for your favorite browser:
Firefox: https://addons.mozilla.org/en-US/firefox/addon/stylish (be sure to place the CSS inside the `@-moz-document domain("github.com")` block)
Then, copy-pasta the styles from `github-dark.css` into a new userstyle. Be sure to specify that it apply to sites beginning with `https://github.com/*`.
If you use the Stylish addon on Chrome or Firefox you can find one-click installs including automatic updates via the packages below.
Open an issue or submit a pull request, please.