Just a comment.
I read in a book about WW2 that a tank group were about to advance when a trooper pointed out a camouflaged German tank to his officer. The officer and nobody else could see it. Turned out the trooper was colour blind and could see the tank when others could not. He spent the rest of the war on point so to speak.
I never found out if this ability was reported and any studies were carried out to see if colour blindness was an asset in detecting camoulfaged ememy positions or vehicles.