But did you check the brightness levels. I agree that it is random and just dumb luck if you get one. But while waiting in the Apple stores the displays seemed fine. Until I checked the brightness and lowered it down. If I have mine at 100% then it looks fine, whites are white. But any lower than 95% and the yellowish green takes over. The ones in the store did as well. Not as bad as my first one, but very noticeable.
But since I have seen some that are good from coworkers I know they exist. I am going to give it a month at let stocks cycle a couple of times and try exchanging again. I do know we can fix it ourselves when a jailbreak comes out, but you should not have to jailbreak it when I can not think of a good reason not to have an advanced display setting where users can change the color profiles themselves. I would have though by now and the complaints on this year after year that they would just include it. It would save a lot of time and money with their stores not having to constantly deal with people and constantly replacing phones