the therapeutic use of colors is very ancient practice and this science has developed with time the time. all colors have mental,physical,emotional and spiritual purpose? any one has experienced it?
you can experience it yourself if you want to.
look at a red paper, and see what you feel.
don't you feel something ... busy-like and hatred within it??
you don't like to look at this colour the whole day do you??
oh well, atleast I don't. =P