So today I noticed theres some rainbow discoloration in the bottom left corner of my palm pre plus' screen so I did the touch interactive test with the green blocks to see if I had any dead pixels or if effects colors on the screen. It doesnt just noticeable when the screens off and its sometimes there more or less depending on how hot it is I think??? Should I be worried or is my phone fine since its only when the screens off and it doesnt effect the colors on the screen