When it comes to nails this fall, blue is the new black—inky shades of midnight blue, to be exact, highlighted with a hint of sparkle in some instances, sheer in others. “Blue is the perfect color to offset superfeminine clothing,” says celebrity manicurist Deborah Lippmann, who created a sheer dark navy called Rehab for her eponymous line. Think you’re too old to wear such a trend? Think again. The key to pulling off a bold color is supershort nails and a heightened dose of confidence. “You don’t have to be young to wear it,” laughs Lippmann. “You just have to be brave.”