is this close?
http://discussions.nokia.com/t5/Noki...h/td-p/2288691
I am on my second 1520 now after my first one developed a hairline crack.
I just took it out of my Belkin folio from which I have to snap it out of and saw my home screen look like all the colors of the rainbow.
It was like a color negative.
The screen of the Lumia became completely covered with bright yellows, reds and greens. (Kinda like a bad day in Fresh Paint App.)
It quickly recovered and went back to normal though.
I blamed it on having put some pressure on the phone to remove it from the case.
Perhaps it was the brightness setting however, not recovering from having the folio shut.
Maybe it goes with accidentally hitting the volume keys, power button and camera key all simultaneously?