SAN FRANCISCO (CBS SF) – Some liken it to meditation, others call it artful mindfulness. Whatever the reason, adults have started coloring, and adult coloring books are topping the bestseller lists.

Add Yahoo as a preferred source to see more of our stories on Google. Think coloring is for kindergarteners? Think again! Well, it totally is, but it's also for grown-ups in need of stress relief.

Adult coloring books are giving Harper Lee a run for the money on best-seller lists this summer. Dover Publications has sold more than 3 million adult coloring books with titles like “Flower Fashion ...

Sitting near the end of a table with a coloring sheet in front of her, Lauri Neumann-Grable used her left hand to steady the paper and her right to fill in its small flower patterns with a light-blue ...

When Amanda Rulton picked up a cheap coloring book and some felt-tip pens, she didn’t expect the activity to stick. It came when she was in the middle of a health crisis. Eighteen months ago, she had ...