Do or Don’t: Dark red lipstick

My friend Caroline recently posted a few instagram photos of herself wearing dark red lipstick. How gorgeous and sultry does that color look? It would look beautiful on a winter evening or a date to a cozy restaurant.

The trick is to choose a color that has enough red and isn't so dark that it looks scary. Caroline's color is sold out, but two other fantastic colors are the burgundy MAC Diva (below left), and the black cherry NARS Terre de Feu (below right):
Thoughts? Would you wear dark red lipstick?

P.S. Caroline's 14 hair tutorials, and more do or don'ts.