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.
Try to use a themed coloring. For example, a series of coloring books about animals, buildings or machines give children an idea of the objects of the world. Coloring of fairy tales or cartoon characters, are good because they allow the child to "talk" with their favorite characters and express their attitude towards them through colors.