Painting will be very helpful for people with post-traumatic syndrome, or those who are constantly in a stress state. The fact that such activity calms the amygdale, i.e. the area of the brain that is responsible for generating emotions. When you focus on coloring pictures, you give your brain a chance to rest and relax.
Coloring teaches accuracy, perseverance, patience, and the ability to bring the everything to a complete end. For kids who are still not that good at coloring there is a way to create a beautiful and bright picture.