You can also transform your own photographs into a paint-by-number activities, too. Here are a few of the many paint-by-numbers templates that are just waiting to be filled in. Mountain Spring River ...

Word spread fast about the paint-by-number portraits that West drew by hand. He couldn’t keep up with the demand for portraits. That’s when Hipskind became involved.

Download our paint-by-numbers template, do some lovely colouring in (either follow our colour chart or go wild with your own shades) and tweet your effort to us using our #WillsByNumbers hashtag.

By 1962, paint-by-number kits had passed their heyday and were ready to be co-opted by pop artists such as Andy Warhol, who drew his own paint-by-numbers templates and partly coloured or painted them.

Paint by numbers, a phenomenon noticed by Warhol early on in its grip on the public, has today been usurped by the popular, and controversial, trend of stress-relieving adult coloring books.