Coloring is supposed to be a free activity but color by number gives it limitations. There is a strict rule that must be followed when completing color by number activities. Number assignments need to be adhered. Your child can't just choose and use any color. It'll be easy to spot mistakes if they do. Ready to see beautiful art pieces that come with boundaries? | Color and Chill Color by Number Books for Kids by Educando Educando Kids, Paperback | Indigo Chapters