Think of it like you would a regular red lip:
-The color in the tube can be deceiving, so try a swipe on the skin first before purchasing.
-Keep the rest of the makeup subtle.
-Layer on a little at a time to build up to your desired intensity.
-And, most importantly, you must find the right color for your skin tone.
Here are 3 of my favorite vampy lip colors:
For light skin tones: By Terry Rouge Terrybly in Carnal Attraction
For medium skin tones: Nars Pure Matte Lipstick in Terre De Feu
For deep skin tones: Covergirl Blast Flipstick in Intense
From left to right: Rouge Terrybly in Carnal Attraction, Nars Terre De Feu, and Covergirl Blast Flipstick in Intense