Ever since .63, the game has seemed to be very high in brightness for some reason, which can result in ugly graphics, and washed out colors.
I learned recently, it seems to be more of some sort of Adaptive Exposure/Brightness feature that seems to kick in, especially in areas like forests.
This is a great feature, that can help you see in dark areas, but it needs to be tweaked.
Sometimes the buildup of exposure/brightness can be a lot, resulting in very bright, and washed out ugly environments.
This is the most noticeable on XBOX but still on PC, and needs to be tweaked to make the game look better.
This mainly occurs in forests, and can be minimizes by looking at the sky for a few seconds and then returning to look at the environment & character.