I'd have a white iPhone5 but my wife wanted that one and I didn't feel like having the same color
I had the white 4S. My wife was still on her parent's plan so she upgraded to the 5 and chose the white one. Then after moving her to my account she decided that she wanted me to have the 5 so we swapped. The top corner of the screen was not seated properly so I had to take to the Apple Store. While there I tried to exchange it for a black one but they said I could only swap it for another white one.