A good color means natural. Look carefully at a fistful of hair in the mirror. See how each strand has a different tone? Perhaps even different colors on one strand? These are the natural striations that Mother Nature gives each head of hair to work with natural lighting. A good "color job" must duplicate these natural highlights to be effective.
Some of the most interesting hair color ideas, however, do not come from professionals but from celebrities who sport unique looks to stand out in a crowd. Not only do they manage to start off a fad, they also help create some very interesting hair color ideas. So if you have a favorite movie star you associate yourself with, you can always check out the hair colors they have sported now and in the past. Try not to choose a hair color idea which does not suit your personality as that is something you will be very uncomfortable in once you get it done!