Focusing on the positive with Coloring-for-Adults.com. Coloring page Woodpecker on a tree – beautiful anti-stress game for print and online for adults. Coloring helps adults look at the problem from a different angle. Switching between different modes, you can start painting again. Save the created mood for the whole day or a wonderful evening. Inspiration! Permission: Creative Commons Attribution-NonCommercial 4.0 License. Artist: Persimmons Studio.