YouTube video publication of animation: https://youtu.be/9TVgyB-yYqE
This is via cellular automata from a Python language script I wrote and which another programmer improved. It simulates imaginary bacteria that leave color-mutating waste as they colonize. I posted about this script with other example output in more detail earlier, here:
The python script which generates this and virtually infinite varieties of works like it is at: http://s.earthbound.io/colorGrowth
Content of source settings file 2019_10_04__22_46_35__c326e1_colorGrowth-Py.cgp:
–WIDTH 1920 –HEIGHT 1080 -a 175 -q 2 –RECLAIM_ORPHANS 1 -n 1 –RSHIFT 5 -b [252,251,201] -c [252,251,201] –BORDER_BLEND True –TILEABLE False –STOP_AT_PERCENT 1 –RANDOM_SEED 2005294276 –GROWTH_CLIP (0,5) –SAVE_PRESET True
This work and the video, I dedicate to the Public Domain.