Ok, so basically i've been using the black color case by switcheasy. I don't really take it off every night to wipe down the ipod like i'm supposed to. Now, when i take the case off, the back of my ipod has no scratches on it, but instead it has like spots that no matter how hard you wipe it or clean it with water or glass cleaner will refuse to come off. I don't mind them being there it's just that i'm a neat freak and in fact they do bother me. I was just wondering if you guys could help me.