I have to say to the original poster although it's hard to tell from the images you posted I would be more than happy with the display. I have seen first hand one of the so called "yellow tint" displays (my friend allegedly had one). When I went round to his place to see this dastardly flawed display I found it looked perfectly fine to me.
What had happened was he had read threads similar to this one about "yellow tints" then started to pick his own display to bits, examining every minutia. In the end he convinced himself he had this "yellow tint" whereas I think the issue is more related to ones own eyes. If you stare at any bright object then blink one tends to see yellowish colour bands, it's a form of "screen burn" on the brain. That's my spin on it anyhow. Again to the original poster - good look with the 21.5" model. I find mine too small and the 27" to large so I'm hoping for a Mini refresh with reasonable specs then I can sell the iMac and use my own perfectly sized 24" HD screen.
What had happened was he had read threads similar to this one about "yellow tints" then started to pick his own display to bits, examining every minutia. In the end he convinced himself he had this "yellow tint" whereas I think the issue is more related to ones own eyes. If you stare at any bright object then blink one tends to see yellowish colour bands, it's a form of "screen burn" on the brain. That's my spin on it anyhow. Again to the original poster - good look with the 21.5" model. I find mine too small and the 27" to large so I'm hoping for a Mini refresh with reasonable specs then I can sell the iMac and use my own perfectly sized 24" HD screen.