THE COLORS OF SPEED: INVEST IN SILVER

Silver is synonymous with innovation and modernity—think space missiles and sleek architectural design. In hair color, it often translates into a distinctive sterling character. (Anderson Cooper? The silver fox.) Used as your own style hue, silver reads close to a cool gray, and the metallic hint renders it richer and more playful. But unless you're trying to look like an award trophy, consider it an accent color best employed in small amounts.