I've read numerous articles stating the color a child uses most often describes their emotions, or personality. I am unsure how accurate this is, but my favorite color has been deep purple for years, as long as I can remember being asked, "What is your favorite color?" - I've always replied purple.
There are also other colors I like, but not near as much as I like purple. My other favorites, are green and black.
I found a few little bits of information containing colors and personality, and here are the follow results for my favorite color(s):
Purple: Purples are highly individual, fastidious, witty and sensitive, with a strong desire to be unique and different. Temperamental, expansive and artistic, a Purple person may become aloof and sarcastic when misunderstood. If you chose Purple, you tend to be unconventional, tolerant and dignified, likely to achieve positions of authority.
Green: The color of harmony and balance, Green symbolizes hope, renewal and peace, and is usually liked by the gentle and sincere. Greens are generally frank, community-minded people, fairly sociable but preferring peace at any price. Green people can be too self-effacing, modest and patient, so they may get exploited by others. They are usually refined, civilized and reputable.
Black: Dignified and impressive without being showy, Black people want to give the appearance of mystery, but their preference may also indicate a suppression of desires and worldly aims, suggesting hidden depths and inner longings.
To list your personality by your favorite color, visit this link:
http://www.care2.com/greenliving/favorite-color-personality.html