Easy when it's a color change, but this attitude is horrible when it comes to anything functional. You stop being able to learn how things work because someone wanted to make a small tweak, and now you don't even get notice it's happening.
This forum gets hacked into that, you can't see points a comment gets unless you measure it by the gray of the comment, in which case you can tell exactly when it has 0 points, or -1, or -2, or -3, or -4. Scrapable, and illegible. Opens itself to voting rings. Not even legible if highlighted, you need to copy-paste to another application.
I brought this up formally.