Coloring Mania: Adult Coloring Books - Kaleidoscope Mandala Art Therapy Designs for Adults to Color (Volume 2). Coloring is fun and it helps to relieve stress while you enjoy the peace and pleasures of adult coloring books. Art therapy gives you a lovely calming effect as you color your worries away. This adult coloring book offers over 50 art designs for you to color with your coloring pencils, markers, gel pens, etc. You'll find patterns, mandalas,...