Funny that you say THAT! My wife bought a used leather footstool/seat sort of thing. She insists that it is orange. Myself, with backup from our kids, told her it is dark red. The top was badly in need of polish/conditioning so I ordered some online, in dark red. Of course, it matched perfectly. She still insists it is orange. Our long standing understanding is that she is simply hue-blind. She can tell the color family apart, but is absolutely awful at matching or coordinating shades of color. I suppose it is good that I have a better eye than some guys. I think the bigger thing for your example is not that guys don't see different shades, we just don't use different names for them typically. We tend to use the names from the 8-16 Crayola boxes. Women are much more likely to use the 64 or more boxes, if you follow me. Of course, as in my case, your mileage may vary.