anyone else have issues with a consistent gray onscreen?

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http://forum.xda-developers.com – My phone seems to have a gray issue. the lower 20% of the screens grays are much darker when it should be uniform. I can see that in horizontal view that the gray status bar gets noticably darker towards the affected area.. Whites also have a very veryyy slight pinkish purple tint. This is my second replacment S4. Is this common? Or should I deal with it since probably majority of these amoled screens suffer from this? EDIT: whites have a pinkish purplish tint ONLY in the affected area. The unaffected area of the screen has perfectly correct colors as far as my eyes can tell (HowTos)