Coloring is an activity that children worldwide have long enjoyed. With a picture already made for them, kids simply choose a crayon, pencil or marker of their favorite color and fill it in. But why should children get to have all the fun? Now they don’t. More and more adults are enjoying relaxing hours of coloring. This is thanks to a new book craze in the United States and in other countries around the world an adult coloring book craze. In December, five of the top ten best-selling books in the United States were coloring books made for adults. Artist Trina Lucido creates coloring books. To find inspiration for her drawings, she says she doesn’t have to look far. One day I saw a beautiful leaf and boom! I did a whole page on leaves. So, some came from sketchbooks. Some were just one-word inspiration and some I just saw something on the ground and that was my inspiration that day. Trina Lucido's latest coloring book contains 40 pages filled with hand-sketched drawings of flowers, birds and geometric shapes. It also has spaces to journal.