In fact, Basford's coloring books for adults are so popular, they might be the best-selling coloring books for adults ever—according to a report in The Guardian, Basford has sold more than 1.4 ...

Don't let the cops see your kid coloring in this book -- they might confiscate that box of Crayolas, or worse. Forty-six artists, including Shepard Fairey, contribute black-and-white artwork to a ...