screen color flashing?
The display colors seem to be flashing from normal to a muted color tone in all apps. Any thoughts on how to fix it? It's like the colors just aren't right.
iPhone 6, iOS 8.4
Try a reboot by holding both the power and home buttons until the Apple logo appears, about 10-30 seconds, then release both buttons.
If that does not help, it is probably a hardware issue and needs a visit at the Apple Store Genius Bar to have the techs check it out.