10 Startups That'll Change The Kids Coloring Pages Industry For The Better
https://writeablog.net/n6ewdmn810/the-benefits-of-coloring-for-adults-have-never-been-clearer-than-it-is-now-today
Mandala colouring books are for enjoyable, for meditation and even for colour therapy. Also, a kid can find out about many more subtle colors which is why coloring books can be a beneficial instructional tool.