Sexually selected skin colour is heritable and related to fecundity in a non-human primate.
Dubuc C, Winters S, Allen WL, Brent LJ, Cascio J, Maestripieri D, Ruiz-Lambides AV, Widdig A, Higham JP. Sexually selected skin colour is heritable and related to fecundity in a non-human primate. Proc Biol Sci. 2014 Nov 07; 281(1794):20141602.