Site Palette - Get the essential colours from any website
GitZip - Download or create a download link for a GitHub project folder/sub-folder or file.
Sketch Palettes - Sketch plugin to save and load colors into the color picker
Refined GitHub - Browser extension that makes GitHub cleaner & more powerful
Swatches - A fun and accurate color picker for the real world
GitHub Hovercard - GitHub Hovercard provides neat hovercards for GitHub.