I'm not sure if it means anything, but the first time I saw LKH with lighter hair and I said "Oh, your hair is getting lighter," she tried to act like it wasn't any different at all. I recall her saying "No, I haven't changed it." until I said "Yeah, I"m pretty sure it was black before." ;) and then she gave me a puzzled look and then finally said "It's a little lighter than before."