Crayola Launches a Line of Coloring Books for Adults Because sometimes it's fun to color inside the elaborate lines.

By Laura Entis

Opinions expressed by Entrepreneur contributors are their own.

Crayola

Why do our coloring-book days end with our childhoods?

Recently, they haven't. You may have seen the think pieces -- adults en masse are redefining coloring from a kiddy activity to one that can be enjoyed by sophisticated grown-ups.

The trend likely originated with the release of a whimsical, garden-themed adult coloring book by the Scottish artist Johanna Basford in 2013 and since then, the industry category has exploded in size and vibrancy.

Related: Century-Old Businesses: Their Secrets to Success

So it's no surprise that Crayola wants a piece of the action. The company, synonymous with elementary school coloring everywhere, just launched Crayola Color Escapes, its "premium coloring pages specially designed for adults."

"Whether it's about reliving your childhood or tapping into your peaceful place, Color Escapes offer a soothing, creative experience that's easy to do and easy on your mind," Crayola's website reads.

The line includes four sets of themed coloring books – Garden, Nature, Geometric and Kaleidoscope – that come with color pencils and either fine line makers or watercolor pencils. Each set retails for $24.99.

So – why the craziness for coloring? Many adults report finding the activity therapeutic, relaxing and, yes, an "escape" from daily life and adult responsibilities.

It's certainly cheaper than a vacation.

Related: What the Color of Your Logo Says About Your Company (Infographic)

Laura Entis is a reporter for Fortune.com's Venture section.

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