GitHub Dark Theme is a Chrome add-on that provides a dark theme for all GitHub pages. Developed by a19riq, this free add-on is perfect for users who prefer a darker color scheme while browsing GitHub.

With GitHub Dark Theme, all GitHub pages will have their appearance changed to a dark theme, primarily based on Atom One Dark. This add-on offers a sleek and modern look, making it easier on the eyes during long coding sessions or browsing through repositories.

It's worth mentioning that GitHub Dark Theme is a fork of the original project by poychang/github-dark-theme. It utilizes Codemirror styles from StylishThemes/GitHub-Dark, ensuring a consistent and visually appealing experience.

Overall, GitHub Dark Theme is a great add-on for those who enjoy a dark theme and want to enhance their GitHub browsing experience. It's easy to install and provides a polished and professional look to all GitHub pages.