Below are 2 links to 2 different color tests. The first one, Colorstrology, is pretty simple. It will tell you what specific color corresponds with your birthday and give you a little blurb about yourself. The second is a much more devious little test. The Luscher Color Test will ask you to arrange two sets of colors and from those results will tell you 3 things: problem underlying current stress, desired objective, and current inappropriate behavior. It is actually less devious than it sounds, but you might be surprised to find that the results are pretty accurate. If you do not think so, you are probably lying to yourself so stop that.
Note: If the links don't work or you missed em: