Oh, I didn't mean to get it professionally colored. You can go to a beauty supply store yourself - somewhere llike Sally's Beauty Supply - and buy the same type of color they would use in a salon. The developer is like $10 for enough to do several color treatments, and then the individual dyes (the color part) are typically around $4-8. If you have shorter hair, those can sometimes do 2 treatments.

The sales people working at my local Sally's have always been super helpful with their advice too. So even if you don't buy stuff, they could possibly point you in the right direction.