In the book Concerning the Spiritual in Art Kandinsky writes about the spiritual effect color has on a person. In the first paragraph of the chapter The Psychological Working of Color Kandinsky writes about how if you let the eye stray over a palette splashed with many colors it produces a dual result. Kandinsky goes  onto say

“In the first place one receives a purely physical impression, one of pleasure and contentment at the varied and beautiful colors. The eye is either warmed or else soothed and cooled. But these physical sensations can only be of short duration. They are merely superficial and leave no lasting impression, for the soul is unaffected. But although the effect of the colors is forgotten when the eye is turned away, the superficial impression of varied color may be the starting point of a whole chain of related sensations.”

Kandinsky then goes onto write about how different colors and different shades of color can have a different affect to a persons soul. For example hes one red would prove exciting and another would cause pain or disgust through the association with running blood. A bright yellow may look sour because of the association to the taste of a lemon. He also goes onto say there is a link between color and musical notes. For example he says “it would be hard to find anyone who would try to express bright yellow in the bass notes, or dark blue int he treble”. I find this very true when visualizing music personally I picture darker colors for the bass notes and brighter colors for the higher tremble notes.

Kandinsky also goes onto say that chromotherapy, which involves stimulating the brain with different colors, has had definite influences on the whole body. Red light stimulates and excites the heart, blue can cause temporary paralysis. However when tried on animals and plants this no affect. Which Kandinsky goes onto say:

“Generally speaking, color is a power which directly influences the soul.”

“Color is the keyboard, the eyes are hammers, the soul is the piano with many strings. The artist is the hand which plays, touching one key or another, to cause vibrations in the soul.”