Useful art therapy at Coloring-for-Kids.com: Lock and Key coloring page is an online game and printable coloring book that starts over and over again. The main advantage of coloring illustration is its creative component. The child develops his own imagination and fantasy, forms an artistic taste, improves motor skills and emotional perception, studies shapes and colors. Color the page with young artists. Joint creative process unites! Creative Commons Attribution-NonCommercial 4.0 License. Author of the work: Persimmons Studio.