[aiiee]

FWIW, it appears *most* cases of 'rainbow' screen lead quickly to a hole or tear in the membrane under the screen and the touch function of the screen fails. I had this happen to me and was asked by the rep what the moisture sensor looked like and had I ever dropped it. When both questions were answered, they mailed me a replacement. Check the little red crosshatched sticker under the battery cover. If it's not solid red, you should be good to go.