HTC One Pink Background

I have HTC ONE with Android. I have the problem of PINK Background on the camera. I tried to get replace the Camera with new lens but not able to get rid of Pink Background. Can any one suggest if EXTERNAL LENS WOULD HELP TO AVOID THE PINK BACKGROUND. If so can anyone suggest type/model for such external lens. My mobile is out of warranty

Murali Kavitarkika

muralikavi@rocketmail.com