Today there is a large set of coloring books. You can find coloring-cursive books, books outliners, for boys (all sorts of appliances, machines, robots, etc.), for girls (fairy-tale characters, dolls, funny funny little animals). There's even a wallpaper coloring books that opens a wide field to have enough space for young artist.
Coloring allows to cope with a variety of emotional problems. For many people, boredom and stress are the main triggers for the emergence of disorders of different nature. This is especially true of people who suffer from anxiety, depression and drug addiction. When patients are engaged in coloring patterns in the book, they concentrate in the picture and keep the focus on the long term. This helps to shift the focus from the negative thoughts to positive and productive mood.