What do the colors red gray and purple mean?

Red can symbolize excitement, energy, speed, strength, danger, passion, and aggression.

Gray can symbolizes security, reliability, intelligence, staid, modesty, maturity, conservative, old age, sadness, and boring.

Purple can represent royalty, spirituality, nobility, ceremony, mysterious, wisdom, enlightenment, cruelty, arrogance, and mourning.

-From:http://www.three-musketeers.net/mike/colors.html