Well, apparently they were back then and still are today for people of all ages.
Seasons coloring pages is actual in every season. At the summer we are searching summer coloring pages, at the winter - winter coloring pages, at the autumn - autumn coloring pages, at spring - spring coloring pages. And we try to give it to our guests.
No matter what the theme or the picture, all a child - or the young at heart - needs is the page and something to color with. Pencils, crayons, markers, watercolor paints, chalk. There are coloring books made specially to be used with water-colors, that come with their own little set of paints and brush, and have thicker pages.
Mickey Mouse was created as a replacement for Oswald the Lucky Rabbit, an earlier cartoon character created by the Disney studio for Charles Mintz, a film producer who distributed product through Universal Studios. In 1928, with the series going strong, Disney asked Mintz for an increase in the budget. But Mintz instead demanded that Walt take a 20 percent budget cut, and as leverage, he reminded Disney that Universal owned the character, and revealed that he had already signed most of Disney’s current employees to his new contract. Angrily, Disney refused the deal and returned to produce the final Oswald cartoons he contractually owed Mintz. Disney was dismayed at the betrayal by his staff but determined to restart from scratch. The new Disney Studio initially consisted of animator Ub Iwerks and a loyal apprentice artist, Les Clark, who together with Wilfred Jackson were among the few who remained loyal to Walt. One lesson Disney learned from the experience was to thereafter always make sure that he owned all rights to the characters produced by his company. 
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.
So, ask your child about there ideas of free coloring pages and look for it. These activities are actually a good thing, coloring can help make your child feel that he or she is a great artist. It will definitely help them develop a great sense of self-esteem. So, as a parent, it must start within your hands.
Commercial use of color printing is prevalent in newspapers and magazines that make their material captivating for the reader using this means. It usually involves the customization of a printing press to automatically reproduce the headings, subtitles and other content features of a page in their correct color presentations. This is especially important in magazines, which rely almost entirely on colorful pages. The production of posters and outdoor billboards also rely on color blending to reach a certain visual effect. This is rather complicated for it is in full color impression, which is ideally achieved through the blending of three neutral hues with black. The technique is also applied in photography to give a full color impression on the whole page.
Nowadays the World Wide Web made simple getting necessary info. And coloring pages reap benefits of the Internet enhancement.