Color therapy is a treatment of certain ailments by using the color spectrum impacting one's psycho-emotional state and well-being.

Color is a physical phenomenon - electromagnetic wave.

Color is a psychophysiological phenomenon - as one can see it with their eyes therefore it impacts us physically, optically, and emotionally.

Light electromagnetic waves, penetrate through tissues of the human body and bring needed energy to the organs by stabilizing and balancing their functions.Color therapy works with 

Stress

Depression

Migraines 

Insomnia

Vision disorders

Epilepsy

Pain management

And other alignments