Strange rainbow color smudge under the Wii U gamepad screen
So the other day I noticed a weird rainbow smudge under the g&mepad screen. I cant wipe it off since it,s under, I dont know why it's there and behaves strangly. When I swipe my finger across the screen the amudge follows and when I release it goes back to it's original position. The gamepad still works great and its barely noticable while playing but I was wondering if its a problem and how I can fix it please help.
Is this a good question?