Hi. I currently have a 16GB Black iPhone 3G and it has some problems such as a constant popping sound coming out of the speakers and light leak on the chrome of the screen. I am thinking about going to the store soon to get it replaced, but i'm wondering If they would also let me get a white iPhone 3G because the Black color gets old fast. I mean, there are problems with the phone, but I'm not sure if they would be able to switch colors for me. Any thoughts? Thank You!