There are so many coloring books for adults online, but we've rounded up 30 of our favorites. There are some beautiful (and interesting) choices here, so you're sure to find something you'll like!

Colorfy is one of the more popular coloring book apps. It features a metric ton of content, including florals, patterns, mandalas, cats, gardens, and even famous paintings you can color.

Airline baggage-fee refunds, and other MoneyWatch headlines 01:08. If there’s a sign the bubble in adult coloring books is about to burst, it might be found at New York City’s Museum of Modern ...

The Artist Who Made Coloring Books Cool for Adults Returns With a New Masterpiece Johanna Basford, whose fanciful, hand-drawn illustrations launched a worldwide craze, is back with flying colors ...

Adult coloring books are just that, but without all of the stress that comes with pleasing a client, deadlines or budget constraints, on a much more simplistic scale. I can see why adults find it ...

Johanna Basford is one of the best-known adult coloring book authors — her hit book, Secret Garden, sold more than 10 million copies worldwide. She’s recognized for her elaborate hand-drawn ...

To Benson, and many other adults who need a way to unwind from the world's daily stresses, coloring is a pressure-free form of creation. "The books provide structure, but I usually don't show my ...

Garrick L. Smothers holds his winning entry in the Evergreen Park Public Library’s Winter Coloring Contest for Adults. “I took it seriously and put a lot of thought into how I wanted to ...

Diane Merchant, left, and Mary Ellen MacKay enjoy coloring during a "Color Me Calm" adult coloring event at the Minneola Schoolhouse Library on Thursday, December 10, 2015.