Chartwell-Color By Number Calm. If you are feeling tense, nervous, or uptight in the stress of day-to-day life, try Colors By Numbers- Calm to wash away the chaos that hassles you. Full of gentle images and marked by numbers to guide your meditative creation process, it will help restore your sense of balance. Enjoy structured creativity to help you find all the joys of coloring and puzzles. Artist: David Woodroffe. Softcover, 62 pages. Published Year: 2016. ISBN 978-0-7858-3409-0. Imported.