Useful art therapy at Coloring-for-Kids.com: Adorable Unicorn Coloring Book is an online game and printable coloring book that never ends. Coloring trains perseverance, attention to small details, teaches you to bring the work you have started to the end. Show the young artist that finished work can be saved or printed. And if something didn’t work out, it’s enough to start drawing again. Creative Commons Attribution-NonCommercial 4.0 License. Author of the work: Persimmons Studio.