The other cool thing about them is, they're not the kind of keys you get because you're trying to be cool (i.e. copy other people). You know, like paying $300 for one of those little monster-face keys so you can say, "Woo, am I cool or what? I have a little monster face on my keyboard! This is undoubtedly a very dangerous keyboard now! Watch out, keyboard monster on the loose—buh ha ha!!"
I mean, yikes, y'know? Just 'cause a bunch of other people did it, you do it? Sheesh. Splashy rainbow = non-slavish = clearly superior.