Really? I never found a screen with a cool tint similar to the iPad 2. Same with the iPad 4 - all had *very* warm screens, that eventually I figured this was how all new iPads are going to be. The retina display is obviously superior as it is much crispier - but the tints bother me too much. I guess it's just me - I just wish there was a way to calibrate these screens cause while I appreciate the retina display in the iPad 3 + 4, the warm and red/green tint is distracting and makes me go back to my iPad 2 or calibrated Macbook Pro. This didn't seem to be a problem when the iPad 1 + 2 was released, unfortunately.
I got one of the first 3rd generation iPads - ordered online and picked up on launch day so maybe the earlier screens were different, but it was definitely bluish white like my iPad 2. Initially I had a hard time liking the warmer Samsung screen on my rMBP and then the iPad 4, but I learned to love the screen on the rMBP (and also the iPad 4 once I got one without yellow tints) and find them easier on the eyes. I understand your preference for the bluish white screen however and I definitely wouldn't accept a screen with red, green or yellow tints.
Quite nonsensical to insult the OP for stating a personal preference.
What's it to you if he/she is happy with a non-retina screen?