Sorry, Daffy. That's BTW a crappy answer they gave you: you would not have needed that many replacements if the screens had not been defective.
Strangely, out of the original two ordered, one of the latest replacements I received turned out to have almost no coloration issues (very very faint!), while the other one's intensified after a few days. So, yes, I agree, some of us detect colors more than others (makes me wonder how bland the world must look to some people, not that they know it any other way!!), but there are devices that have almost no coloration. I would not believe it after so many replacements, if I didn't have the proof in my hands.
It's just a matter of QC.