- Hint o' red: Try something with a shot of red, like Butter London Nail Lacquer in Old Blighty ($14) if you want a color that's a little more vibrant and sexy.
- Stay cool: A dark gray or purple is great if you have cool-toned skin, because it will complement your natural coloring.
- Brown it down: A rich brown or brown-tinged black is very flattering if you have warm undertones, because it brings out the gold and olive in your skin.
- Get your glitz on: Try a sparkling overlay if you find the flatness of dark color off-putting. There are many cool shimmer and sparkle effect topcoats out right now, especially the Effects line from CND, and they will lighten things up considerably.