Coloring helps the child to learn how to control the scale of his hand. Please note that when the baby is just started to draw he does not monitor the boundaries of the sheet, and the picture is not painted on the outlines, and even beyond.
To make a max benefit from coloring cheerful pictures, it is desirable to get involved as well. At the same time you should give maximum freedom for actions to promote and in any case not scold if the baby suddenly wants to use a non-standard approach to the application of paints and colors. Let your kid color the alligator in red and swan in green; you shouldn’t blame your child for using the wrong colors, but try to turn it into a fun story. This type of activity should encourage the child to the creative process and the knowledge of the new information, while the parents should contribute to this in every way.