Coloring is a hot new trend of 2015. How coloring books for grownups are different and more complex than the traditional books for kids. The effects are similar, kind of like Justin Bieber’s love for Selena. We all enjoyed coloring when we were little. I mean it’s just as cool as bringing sexy back. Experts are saying sexy is overrated anyway. Notice my humor there… More and more people are discovering the joy in coloring inside the lines. Studies have proven it increases productivity. Coloring books are flying off the shelves by the millions this Holiday season. Remember Crayola’s So Big crayons? Bigger than that even. The popularity is staggering. Amazon.com sells more than 5 thousand different types. From My Little Pony to Harry Potter. The most popular is Secret Garden. Retailers have sold over 6 million copies this year so far. I wonder if that illusive Holiday gift could help you win The Game of Thrones.