There are different varieties of coloring books nowadays, so that all you have to do is decide whether you need it or not; today you can even download the application for coloring. Currently there are more colorings to choose from than ever before, just select the coloring with your favorite motives, print it out or download the program from coloring website.
There is another advantage of colorings for adults. Most of them are very nice and include impressive black-and-white contours that can be turned into a work of art. Imagine the feeling of satisfaction that you get when you have finished drawing and will be able to appreciate the beauty of the masterpiece created by you personally.