I have the same issue. I have an iPad Air 2, IOS 10. I wasn't able to FULLY fix it, but I got the colors back. Go to Settings > General > Accessibility > Display Turn 'Reduce White Point' On, then set it to 87%. Set brightness to max. I do not think there is a possible fix unless having it checked by Apple professionals. But temporarily, this can lessen the display issues. Will use up more of your battery though. If you were able to find a solution, can you please tell me?