Well, apparently they were back then and still are today for people of all ages.
Neuropsychologist Dr. Stan Rodski and brain scientist Dr. Joel Pearson both agree. In an interview, Dr. Rodski shares his belief that coloring for adults can encourage a relaxed state as the coloring individual focuses their attention on the detail and intricacies of a particular image. Similarly, Dr. Pearson explains that the therapeutic effect can be further understood by considering that the image you are coloring replaces any negative ones you may be harboring.
According to Wikipedia: A coloring book (or colouring book) is a type of book containing line art for a reader to add color using crayons, colored pencils, marker pens, paint or other artistic media. Coloring books are generally used by children, though coloring books for adults are also available. They cover a wide range of subjects, from simple stories for children to intricate or abstract designs for adults. The golden age of coloring books is considered to be the 1960s.
People are making the adult coloring books bestsellers on Amazon! At the time of this writing, eight of the top twenty books on the bestsellers list, are coloring books for adults. There must be something behind this recent growth in interest.
Hello Kitty was created by designer Ikuko Shimizu in 1974 and her first appearance was later that year on a coin purse. Today her products are seen in sixty countries of the world and she is a cultural phenomenon.
Believe it or not, there is now a way for children to create their very own iron-on transfers with some new technology that has been developed. The Magic Color Page is transfer paper that has been specially developed for kids. They can draw on this transfer paper just as if they were creating their own picture in a coloring book.
As a young ones parent or a school teacher you need to plan activities with him for coloring pages. For the most part the parents tend to give those coloring pages to kid to keep him busy. But the fact is that these kids need to get some mental exercise from these coloring pages and it should be construed by the kid as a mundane exercise.