I'm curious myself, actually. I might be inclined to agree with you, as computers are stupid and tend to ignore what they don't understand (or burp at you if they think they should understand). At one point I was under the impression that browsers just read the first two letters and do a look-up from there, but that kills the idea of LightGrey and LightBlue and such... And certainly 'Ro' doesn't correspond to 'Green,' nor 'Or' to 'Black,' so...