Eight of the top 20 selling books on Amazon currently are coloring books designed for adults. These books tend to be much more finely detailed than those for children. Popular topics include animals, fish, flowers and mandala spiritual symbols.
Michael O’Mara Books Ltd., a British publisher, says it got the ball rolling. “A staffer said how embarrassed she was to see her mother coloring and getting enormous enjoyment,” says Michael O’Mara, founder and chairman. “We thought, ‘Why not have a stab producing a coloring book aimed at adults?’ ”