See bellow a list of colours and a few about their characteristics:
GREY: Latent powers; indecision,adversity
BLACK: Physical (evil); Higher levels, depths of understanding, holds all knowledge
WHITE: Wholeness; expansion, generous, pure spirit
PURPLE: Progressive; silent influence
RED: Impulsive; fiery, warm hearted
BROWN: Depth of thought; 'brown study'
INDIGO: Peace Loving; sympathetic, devotion
GREEN: Ambition; equilibrium, greed, envy
BLUE : Kindness; patience
YELLOW: Creative, activity
The basis of colour healing consists in causing certain molecular reactions in the body through the medium of the rays.
So, friends, an advantage of this use of colours is that works at all levels of being and many books explain this characteristics.
I will continue to post in this blog, some information that I can get.
Information extracted of the book "The Twelve Rays", James Sturzaker