It's very much a thing: see https://en.wikipedia.org/wiki/Computer_art and
its various links. I haven't done it, because I'm the furthest thing in
the world from a visual artist: I can visualize anything up to and
including hexagons, filled or outline, in various colors, but that's it.
"Seeing,
John Cowan wrote:
> But suppose I write and send you a program that, when used as a web server,
> transmits the necessary HTML+CSS to display on a standard browser a pattern
> of highly colored blobs that I consider artistic, such that if I painted this
> same pattern of blobs it would clearly
