Thinking of ringing in the New Year with a big hair change? Try darker tresses! Nicole Richie recently returned to her brunette roots and now Britney Spears has ditched her signature blond locks for a darker hue. "I was just sick of being blond! I was ready for a change!" Richie told US Weekly. Not convinced deep brown is the color for you? Get inspired by some of the best hair color in Hollywood.