Board Thread:Support Requests - Getting Technical/@comment-4370375-20160804013336/@comment-1142365-20160806031437

Ah, I see. I know what you are getting at, but as far as my CSS knowledge goes, you won't be able to shorten the CSS in the way you describe.

You may be able to be clever and overlay some sort of grayscale transparent gradient over a background colour that will product the effect you are looking for... by using background-color: like you have and background-image: declarations in various subclasses for the gradients.