Women see more shades of colors than men do or can. It seems as though in reds for instance women are more able to see variations in the shade etc. of reds. I was watching a program where 8 color cards where presented. Men would typically pick a difference in 4 or 5 at the most. Women on the other hand picked all 8 cards as being different. Which they were.
I was thinking after I posted my earlier reply how many scale judges are color blind? I would guess that over the years at least some were. Who's to know? I doubt if any judges are tested for it lol.