Harmony and relaxation with Coloring-for-Adults.com: Christmas boot coloring page – a useful anti-stress game for every day for adults. For print and online. Coloring an illustration with many elements improves mood, distracting from everyday worries. The finished harmonious and slightly magical picture can be saved electronically or shared on social networks with best friends and family. Permission: Creative Commons Attribution-NonCommercial 4.0 License. Artist: Persimmons Studio.