I was going to say, I have yet to hear this about the Black...wonder why...
It happens on white phones.
My friend has a white iPhone 5 and we tested the cameras next to each other at the same settings in a dimly lit area and used the flash. The black phone's image was outstanding where the white iPhone was kinda foggy. I have seen this on other white iPhones. The LED illuminates the case and lowers image quality