The xkcd blog asked their readers to identify/name colours in a survey. I don't know why they did it and I'm not sure they anticipated getting over five million judgements, but that's what happened. The graphic above shows the result of some subsequent analysis into gender differences.
Are women more interested in colours, more visually astute or have they been over-educated in bogus terminology by fashion marketing? Are men more decisive, visually illiterate or are they just disinterested in colours?
Who knows? What I take away from this is a reminder that we all have different opinions and passions about the simplest things and that your customers' nuance is not going to be the same as yours.