I am working on a project for macOS (OS X) where I want the window to be set to a dark theme instead of the default light theme, which has a light gray titlebar/toolbar with white buttons.
How can I change the titlebar/toolbar to a black color and the buttons to a dark gray?
I am coding in Swift but an answer in Objective-C would also be helpful. I have attached an image of what I am aiming to make it look like:
