Years ago I attended Edgar Cayce's Temple Beautiful program in Arizona. 10 days of using Cayce principles in non medical healing modalities. Offered to people with chronic and debilitating conditions. Art therapy, music therapy, and color therapy were part of it. We started with a blank canvas and used crayons or paint or pencils to just apply to the canvas. Interesting...cause we didn't really draw pictures...what we did was to observe the colors we used and images etc.