colors are part of a light spectrum, and, as such, emanate certain types of energy depending on their wavelength. Then it goes on to say the colors and what them mean to your personality. 
Red: 

intense, active and very optimistic personalities. 

Orange:
Are you very sociable but you keep the limits? You like to be surrounded by people but you maintain a certain seriousness and balance, you are understandable and very accessible with the people around you.

Yellow:
Very, very creative people. Despite their creativity, they maintain the sense of logic, it is not an overflowing imagination but rather rational and practical.

Green:
Relaxed personalities that value first of all to contribute to others and that others contribute to them.

Blue:

They live according to their beliefs and their thoughts without caring what others think or think of them.

Purple:
Ordained people, very sentimental and, above all, spiritual. 

Brown:
Rooted to the earth, to the physical and to the simple.

Gray:

they rarely leave their routine to undertake complex plans.
That is what i summarized from the article there was longer definitions for the colors but it you want to read it all i left a link.