If you enjoy reading the weekend newspaper, you might have noticed that Parade magazine ran a rather extensive feature on adult coloring. However, if you missed it, you can read the cover story 50 Shades of Happy: The New Joy of Coloring online. As part of the story, you can also download free coloring pages from some of the most popular adult coloring books — including Secret Garden: An Inky Treasure and Coloring Book by Johanna Basford.