So I recently got an iPad mini with retina display. I turned it on and there is a slight, very slight yellowing directly above the home button extending for about a centimeter out towards the screen. Its much less prominent that many of the people posting pictures and my parents and brother can even see it. I'm wondering if it would be worth it to try to get a replacement and hopefully get one that isn't worse or simply live with the minor screen discoloration. In short, is the problem so wide spread that I actually might get a worse iPad mini than before or am I just one of the few unlucky ones? Thank you for your help.