I also found out that there are no rules when it comes to coloring, color outside the lines; it is surprising a way of breaking the rules, and it feels so good. There are no coloring police to arrest you for breaking the color inside the lines rule. Nor do you have to follow the instructions and use the suggested colors. It is a release that is outstanding.
I must admit that personally I bought into this concept hook, line and sinker. When my two older daughters were small, I colored with them, and enjoyed doing it. I never realized the calming effect it had on both the girls and me.
The simple act of coloring is the beginning of gaining tinting knowledge with personal experiences of school day memories and trial and error. As you follow suggestions for cool and warm colors one begins to understand how colors offer contrast or compliment each other. The emotional side benefits of tranquility and immediate rewards encourage learning.