...http://www.doylegroup.harvard.edu/~carlo/JRL/37/PDF/37-071.pdf Another source is "Aposematic coloration" by Mathieu Joron http://zeldia.cap.ed.ac.uk/joron/joron02apo.pdf#search=%%22aposematic%%20%%20color%%20evolution%%22 Both have bibliographies with more, or just google "aposematic coloration".

Jim writes: Short Review Heredity (2006) 97, 157-167. Heliconius wing patterns: an evo-devo model for understanding phenotypic diversity M Joron, C D Jiggins, A Papanicolaou and W O McMillan http://www.nature.com/hdy/journal/v97/n3/full/6800873a.html I just browsed the abstract, but it seems to say that very few gene changes can produce very many patterns. If ...

Short Review Heredity (2006) 97, 157-167. Heliconius wing patterns: an evo-devo model for understanding phenotypic diversity M Joron, C D Jiggins, A Papanicolaou and W O McMillan http://www.nature.com/hdy/journal/v97/n3/full/6800873a.html I just browsed the abstract, but it seems to say that very few gene changes can produce very many patterns.