Bdog13 have you got color correction enabled in the accessibility Settings?
Be careful switching on, I have to reset my phone after switching it off as it tends to not switch off without a reset.
Also, if you have Pixel 8 there are reports (myself included) of the screen turning green and grainy at times. I think its an issue with the screens ribbon cable. Gently tapping the camera end of the phone in my palm usually fixes...