Courtesy of Essie

The deep, shimmery navy Debutante shade works well on cool-toned medium or light skin, according to Lippmann. "It would be beautiful on someone with pale skin and rich, dark hair."

Courtesy of Jessica Nails

Copper is a great match for warm-toned skin (are you African-American, Asian or Latina? This is a fantastic choice.) It can go from day to night, but Lippmann warns that shimmer is appropriate for most offices, but glitter is strictly for nighttime.

Courtesy of Wet N Wild and OPI

Much like choosing the right red lipstick, go with your skin's undertones for the best results for crimson nails, too. Cool skin tones look best in blue-reds, while orange-reds are ideal for warm tones. But if you absolutely love a red that's "wrong" for your skin, here's Lippmann's fabulous suggestion: find a blue-red with golden flecks to complement warmer skin, or an orange-red with silver shimmer to flatter cool skin tones.

Courtesy of Zoya and Sally Hansen