St. Martin's Books-Zendoodle Coloring: Calming Swirls. Elevate your inner harmony by coloring the stunning illustrations in this adult coloring book. Each of these designs offers the opportunity to relax and tap into your artistic abilities. Each page is perforated, making it easy to frame and display your art. Each page is also only printed on one side, so there is no bleed through of color. You can use colored pencils, crayons or markers. Coloring is a great way to unplug and destress and anybody can do it! Artist: Nikolett Corley. Softcover, 128 pages. Published Year: 2016. ISBN 978-1-250-10511-0. Made in USA.