Art game at Coloring-for-Adults.com. Coloring page Irises – a useful anti-stress game for every day for adults. For print and online. Switching attention to the selection of color combinations or solving mathematical examples to fill the elements of the picture with the right color helps to take yourself out of the context of the problem and walking in a circle of an unsolvable problem. Save the resulting coloring page for inspiration. Permission: Creative Commons Attribution-NonCommercial 4.0 License. Artist: Persimmons Studio.