This is based on a technique I've used to create textured abstract art by starting with a base design and applying millions of small mutations.

This design introduces generators and voids.

Generator: A block of color that continually reappears in the same location as the design generates.

Void: A black hole that appears near the end of the generation to break up the design and give visual relief.

- Higher themes are more rare (60 max)
- More colors are more rare (3 min, 6 max)
- Higher generator counts are more rare (5 min)
- There are 5 possible void patterns varying in rarity