Good Read. Quote from Ctein
"Can't speak to whether or not you have a defective screen, but "blues" should go more "purple" on the new iPad. The iPad2 inaccurately rendered blues as too light and shifted towards cyan. The new iPad renders them very close to correct (as compared with a properly calibrated D65 studio monitor). I see no big difference in the rendering of pure yellows between the iPad2 and the new iPad, but the slightly warmer (and more accurate) color temperature of the new iPad could make them look subjectively different (i.e., compared to the "white," yellows would look slightly warmer on the iPad2).
If you don't like this color rendition, then return the new iPad, but don't expect Apple to "correct" it. It's actually much more correct now than it was in the iPad2."
This better explains my above test, and why out of all of my displays, only the iPad 1 was showing a difference in color.