When I first purchased my 2011 iMac, I also purchased the Thunderbolt display for a 2 screen setup. I was astonished at how much whiter the Thunderbolt display was than my 2011 iMac. It was the main reason I upgraded merely a year later. I sold my thunderbolt display and ordered the 2012 iMac. Today it arrived and I must say, I am extremely disappointed in the color. Now, my 2011 iMac makes the 2012 look brown! I couldn't even imagine the 2012 next to the thunderbolt, it would be unbearable. I am looking for others that have the new 27" iMac and would like to see your screens. Here is a picture, my 2011 iMac on the left and the brand new 2012 iMac on the right. It looks even worse in person. http://i.imgur.com/iH0Er.jpg I'm taking this back, ASAP.