I am sure this has been mentioned before, but it bears repeating...how about if hovering over a color in the vanity also gave you a preview of the results on your avatar. Ditto maybe with clothes too, but especially with hair/skin color.
I thought that was the point of the mirror and 'try it on' feature. Seems a bit redundant to have the same effect happen when you hover. Personally I prefer seeing the names when I mouse hover, makes it easier to go back to my original color when I do decide on a big change.
For some reason, my Glitch (unlike my RL self), changes her hair color to match her outfit. I can't see the colors of my skirt and shoes when trying on new hair colors.
It's a tedious process: guess at a hair color, save, open wardrobe to see effect, load vanity again, change hair color to a different guess, save, ....
If the mirror were full length, I could see the effect without switching back and forth between wardrobe and vanity each time.