I cracked the back of my CDMA iPhone 4S. I'm looking for a replacement in white, but when on Amazon, a lot of reviews say the color is off-white.
maybe you could get one of those awesome clear ones, the one with the light up apple logo, or the one with jobs's face on it.
I would highly recomend you buy an OEM one because they use gorilla glass apposed to regular glass I had a cheap non OEM red back for my iphone and it shattered from a 1.5 foot drop onto a plastic chair