"And color vision at low light intensity suffers as well."
Originally Posted by
jugofpropwash
Haven't heard this suggested, but some people's color vision is better than others - perhaps in this case, the pilot's color vision wasn't quite 100%?
Here's some information on the effect:
https://en.wikipedia.org/wiki/Scotopic_vision
That article links to the Purkinje effect, where color contrast and perception shift based on illumination levels.