Billie Eilish's Green Gucci Nails at the 2020 Grammy Awards Billie Eilish's nails technically blended in with her outfit, but they truly deserve a shout-out of their own. True to Eilish's bold aesthetic, she sported bright neon green tips that were decked out in the designer's signature print. Manicurist Emi Kudo used OPI GelColor in March in Uniform then a custom blend of OPI Gelcolor in Amazon AmazOFF and OPI Gelcolor in Sun, Sea, and Sand in My Pants. For the intricate GG design, Kudo used OPI Gelcolor in Pump Up the Volume. Image Source: Getty / Amy Sussman