One artist that has been instrumental in this movement is Johanna Basford. Though she is a paid illustrator, she also doodles in her free time and found that there were plenty of people who were interested in coloring her doodles. She had put some of her doodles online for people to use as wallpapers and was approached by a publishing company to use her drawings for children's coloring books, but she took them in a different direction: adults. She has always believed that people have a creative spark within them, but that some need more of a direction than others. A coloring book is much less daunting than a blank page can be.
As it has been stated by Collins and Amabile, "creativity is motivated by the enjoyment and satisfaction that a person derives from engaging in the creative activity." Johanna delights in her work as she speaks on how she even enjoys coloring her own coloring books and enjoys collaborating with the people who color her books. Speaking on the collaboration, she says "I create the artwork and the owner of the book brings the color." On her website, she has colorers upload their creations and even picks the ones that she loves the most to post to her Facebook page. Clearly she is now paid to illustrate, but the dedication that she has to her fans and the love of creating the pictures shows how obviously she loves her profession and creations.
If you are interested in your own adult coloring book, you can find them at http://www.amazon.com/Secret-Garden-Inky-Treasure-Coloring/dp/1780671067/ref=sr_1_1?ie=UTF8&qid=1460943655&sr=8-1&keywords=johanna+basford