Dye wicking through cloth with a front that advances in thread-sized steps, concentrating where it stops rather than fading, and two dyes in one fibre that show as both colours instead of averaging to grey.
Drawn with: a WebGL2 shader.
Reacts to and looks like: gpu, webgl2 and audio-reactive.
Family: Visualiser.
Runs in your browser. The preview above is the same program the renderer uses.