Fun with Coloring-for-Kids.com: Shells coloring page – online game by numbers or picture to print for toddlers and older kids. Coloring allows you to reveal the potential of the child and develop his unique abilities through the freedom of creativity. Invite children to draw – this allows you to unlock the potential of a young artist and develop his unique abilities! Creative Commons Attribution-NonCommercial 4.0 License. Author of the work: Persimmons Studio.