Drag the included Colours.h and Colours.m files into your project. They are located in the top-level directory. You can see a demo of how to use these with the included Xcode project as well. #import "Colours.h" into the classes you want to use this category in and you're all set. CocoaPods pod 'Colours' or, for Swift: pod 'Colours/Swift' NSColor Colours supports NSColor out of the box! Just make