I have a Zagg Invisible Shield on the back of my iPhone 5, because I was worried that the metal would get scratched from daily setting it down on tables, and so forth. But... the Invisible Shield is kind of stained blueish, probably from my dark blue jeans. It kinda just looks ugly. See the picture. I'd really like to just go naked with the phone, but I don't want any significant scratching. Small stuff here and there is okay, but I didn't know how suseptable to scratches the metal is. I never had an case on my iPhone 4 (for over 2 years), and it the glass was great because it didn't really show scratches. Am I worrying too much about a naked iPhone 5?https://www.dropbox.com/s/e6gk877s167i1r0/IMG_0308.jpg