I’m still on the fence about iTunes’ blindingly bright new new color scheme, but a lot of people, uhh, don’t care for it at all.
https://gizmodo.com/itunes-9-everything-you-need-to-know-5355615
Good news, sourpusses! Now you can change it back, with this unofficial patch. (OS X only for now). [Chao’s Design—Thanks, Blake!]