2018-03-25 00:00:00 HOLI Coloring Book for adults. Your mandala, pleasantly relaxes after a hard day, soothing images, colors and sounds of nature. Coloring books for adults HOLI is a journey into the world of peace and relaxation, a moment for yourself, escape from the everyday hustle and bustle. Treat yourself to a bit of free time in the beautiful world of colors, images and shapes. HOLI Coloring book for adults: