If while coloring your child goes out of the outline, it will not be so noticeable. When the child sees how cool his result is, it will inspire confidence in him and will be a good stimulus for further work. Good coloring are those with the text in it. The text introduces the kid with the game, the kid will be interesting, while the text will expand its horizons.
Believe it or not, but the painting will help to improve intellectual skills. It stimulates those brain regions that increase the concentration and attention. It will help solve organizational problems. It seems strange that such activity in general is able somehow to train the skill of time management, but it's true. The fact is that for structuring the information meets the frontal lobe of the brain, and the painting of small and intricate details intensifies its work. The more colors you use, the more complex designs there will be, the brain will work better.