KALMBACH-Patterns in Polymer. Learn polymer clay color; pattern and texture from a pro! Julie Picarello is an award-winning mixed-media artist and instructor whose work has been featured in many magazines and books. This book will provide recipes for successful color palettes; the magic of "Jecru"; Julie's polymer imprint technique based on the art of mokume gane and a helpful list of suppliers and resources. Softcover: 94 pages. Author: Julie Picarello. Made in USA.