For a good mood: Adorable unicorn coloring page – modern drawing for adults to color online or download. 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. The resulting illustration can be saved to your computer, tablet, phone or in a collection on social networks. Permission: Creative Commons Attribution-NonCommercial 4.0 License. Artist: Persimmons Studio.