Traditionally we used to associate colour books with young kids. And grownups were meant to do the painting. But that is not the case now. These days you will find colour books even for adults. However, the pictures in kids’ colour books and adult colouring books are way different. The latter feature complex designs that require intense concentration and extreme precision to get right. Colouring is a great anxiety to relieve your mind and concentrate your mind on something that is very relaxing. Colouring is also a great hobby for people who are trying to spend time away from smartphones and computer screens.