The tint on the iPad is part of the problem , the bigger problem is the COLOR SHIFTING!
Most iPad's if not ALL have color shifting to a degree, some much worse than other's. It's probably due to the high pixel density. I am not talking about extreme angles but just the VERY slightest shift of the iPad to the right or left you can see the color shift to a different hue.
Try it and you will see!
No, mine doesn't have this either. Some of my others did though.
Finally I have settled with a good one. This one has an even screen and that's all I wanted. I couldn't stand the uneven, multi-coloured screens all my others had, they looked awful and totally ruined the retina display.
This one is definitely warmer (uniform throughout) but not yellow. I gave both Springtomize (I use this app/tweak anyway) and Color Profiles a shot and I have to say, Springtomize gamma adjustment is great. Color Profiles is also good but Springtomize definitely has that edge as you can adjust all 3 colours together - red, green and blue. I now have the 'perfect' screen

Not too bright white where it verges on blue, but not too warm where it verges on yellow. It's great! What a wicked little tweak Springtomize has added. Can't believe Apple don't give their customers this option anyway. It's crazy. Mind you, even if they did, I'd still jailbreak
If you have a uniform screen that is too warm for your liking and you JB your device, I would definitely recommend either of these tweaks. However, if your screen is uneven, I don't think they will work. They may make the screen whiter but the uneven parts will still be uneven.