At the time of scripting this article (August 2015), one fourth of Amazon’s top twenty best-selling books are coloring in gossip columns. So what exactly is a grownup coloring book, and just how one thing they are currently outselling top fiction authors with new releases such as E.L. James and Paula Hawkins? Adult coloring books are, plain and simple, coloring in gossip columns for grownups. Like children’s coloring books, they are brimming with outline illustrations…
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