I like colorized diffs, but let's face it, those particular color choices will make most people decide to pick out their eyes with a fondue fork. And that's not good. Digging in your eye-sockets with a fondue fork is strictly considered to be bad for your health, and seven out of nine optometrists are dead set against the practice. So in order to avoid a lot of blind git users, please apply this patch.

Torvalds, Linus (2006-06-22). Message to Git mailing list.