Art therapy at Coloring-for-Kids.com: Coloring page charming horse (difficult) – online game by numbers, letters or download and paint with brushes. Choose a coloring mode, from standard coloring using a wide range of tools, to a game by numbers that children will enjoy and improve attention. Are your young artists ready to color? Invite them to create and create unique drawings soon! Creative Commons Attribution-NonCommercial 4.0 License. Author of the work: Persimmons Studio.