My .02 on why I'm going white
All of my iPhones have been black as well as an iPad. I can't imagine going white on the iPad, to much "reflected" light while trying to focus on the screen. Fortunately, the iPhone bezel is MUCH smaller than iPad, thus less distracting.
I've also had my black iPhone 4 outside laying on the table face down in the sunlight on my back porch. Ultimately, if the day is too hot....the phone heats up and gives me the "heat" error message. I'm hoping to prevent/reduce this occurrence if at all possible.
It also looks pretty cool.
I'm thinking along the same line. But I'm also wondering if I use the white one in the sunlight, would it reflect too much light and make it hard for the eyes?