Is it time for a vibrant new you? The quickest, easiest way to switch your look is simply to change your haircolor. Whether subtle or dramatic, salon coloring can be überexpensive. Why not do it in the comfort of your own home? You can go darker (à la Britney Spears), lighter (like our favorite platinum-haired chick Christina Aguilera), brighter (think fiery red, like Marcia Cross), or caramel (reminiscent of Jennifer Aniston). Here’s a not-very-well-kept secret: All four of these celebrities’ vibrant color came right out of a bottle. —India-Jewel Jackson
