G
Gary Tait
I have some black socks that in some lighting (like at the Laundromat
which has fluorescent lighting) look identical in color, and they
sometimes get "paired" together incorrectly because they otherwise look
the same. Then I go out in daylight, and one of the pair is still what
I'd call a neutral black, but the other one goes a deep reddish purple.
Pretty much anyone with full human color vision would probably see the
difference. It's quite strange, actually.
Way back in elementary school, I recall looking very close at some
textbooks, and they were printed with what appeared a very dark purple,
brown, or green.