https://en.wikipedia.org/wiki/Impossible_color#Chimerical_co...
In ~2016 on the chan someone posted a completely unhinged post about this "bleen" "grue" color that nobody could see. it's probably lost to the ages now, but I remember it.
i still kinda do, because it just happen at random when i am outside. sometimes, usually in bright morning light, sunny morning. no i dont look at the sun, yes mostly its visible looking at the blue of the sky.
last time i had it while in 1 on 1 with my manager. it took a lot of struggle not to try and rub my eye or tell her i was seeing this weird rainbow snake floating around.
overloaded cones, hopefully thats not some indication of something bad but just 'tired eyes'.
Note that those are possibly photosensitive epilepsy risks if you turn them up to 60/100.
I suspect many animals experience color quite differently, including seeing infrared/ultraviolet, etc.
https://www.reddit.com/r/FUCKYOUINPARTICULAR/comments/1dxlt6...
https://kagi.com/images?q=e5+h5+shinkansen&r=au&sh=fWcD0dVpC...