Related: Displaying two different colors to each eye while stereoviewing produces what's called "impossible colors". I ran a small experiment on a game developm

Related: Displaying two different colors to each eye while stereoviewing produces what's called "impossible colors". I ran a small experiment on a game development forum once and it turns out about 50% of people see grey when shown opposing colors simultaneously, while the other half's brains can't decide what color they see and it fluctuates in a way similar to staring at the Sun (did that for about 20 seconds, lost center vision for a month, thankfully no permanent damage. Couldn't read text as each letter vanished as I looked at it!).