Useful art therapy at Coloring-for-Kids.com: English Letter U coloring pages – UMBRELLA is an online game and printable coloring book that never ends. Coloring instills a sense of style, because young artists will choose and combine colors themselves. The movements train the hand for writing, develop fine motor skills. 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.