I can't remember the rule... is it "taupe for Taurus" or "aubergine for Aquarius" or something else altogether? If you're wondering what your best lipstick shade is, according to your star sign, here's a list with some very good examples of the right hue for you.
Smashbox Always On Matte Liquid Lipstick in Some Nerve
Price: $24 at sephora.com
If you're an Aries, you're bold and you don't mind taking a few risks, so why not try something striking, like this gorgeous lavender lippie?