http://dare.wisc.edu/survey-results/1965-1970/types-and-atti...
1 1 1 1
https://www.youtube.com/watch?v=KJe9H6qS82I
[0] https://github.com/GollyGang/ready/blob/gh-pages/Patterns/Sm...
I find USkate the most beautiful, http://mrob.com/pub/comp/xmorphia/uskate-world.html
And if the two chemicals diffuse at different rates, you can get complex patterns or reaction products like spots or tiger stripes.
"The Chemical Basis of Morphogenesis" By A.M.Turing
http://www.dna.caltech.edu/courses/cs191/paperscs191/turing....