Wow. Sounds like you didn't get a chance to get one and now your flaming. I'm not perfect and neither are you. I do regret getting a black one and now I want to switch to a white one. Don't worry about my hassles, the question is simple, will they let me return an opened iPad 1 day old for a white one? If you can't help then move on.
There's no need to justify your decision to anyone else here. It's your money, so get what you want. If you bought it from Apple, you have 14 days to return it, no questions asked. Many other retailers have similar policies. If you prefer the white one, just go to the store and exchange it. Most stores still have some stock left.