I'm sure someone has asked this before, but I actually had some difficulty finding it in search, besides I'm sure there is more info on it now. I just got the iphone 3G (will wait for next year for real upgrade), and I got the black one because I don't even use 2 gigs of space on my current Iphone, but I really want that white cover. Can I swap them somehow? Is there a place I can find the white cover? Is the black cover difficult to remove?