Purple is the color of good judgment.
It is the color of people seeking spiritual fulfillment.
It is said if you surround yourself with purple you will have peace of mind.
Purple is a good color to use in meditation.

Purple has been used to symbolize magic and mystery,
as well as royalty. Being the combination of red and blue,
the warmest and coolest colors, purple is believed to be the ideal color.
Most children love the color purple. Purple is the color most favored by artists.
Thursday's color is purple.

Source: http://www.crystal-cure.com/purple.html