On another note, the history of art education has been deeply influenced by the thinking of Viktor Lowenfeld, who made his career on the developmental stages of child art, one outgrowth of which was the contention that coloring pages impeded the natural development of creativity in children. The available evidence does not appear to be all his way, so take that with a grain of salt. But it's certainly at least as legitimate as the peculiar primary-grade teacher insistence on coloring within the lines.
