A web version would make a great time-waster. At least as the author I wound up spending much more time clicking through the space of images than working on the code; it might perhaps not feel as compelling without the feeling of getting something for almost nothing when your own program comes to life.
https://www.youtube.com/watch?v=kLmtvIt6ihA
http://dahart.com/paper/hart_evomusart_2007_paper.pdf
http://dahart.com/paper/hart_evomusart_2007_slides.pdf
BTW, Karl Sims read this paper and recommended it for Siggraph, but a few other reviewers were fairly opposed to generative art papers. C'est la vie.
Slightly related to the starting topic of learned exploits: op_hwb_color() producing most of the colors seems to have suffered from some undefined or implementation-defined behavior -- I couldn't reproduce old pictures when I came back to this many years later. Yet that one misbehavior deserves a lot of the credit for whatever aesthetic value turned up. C'est encore la vie.
The big thing I spent time on was animating cross-fades between evolved expressions. I’ll send a link to the vid & paper if you’re interested.