Here is a story about why blue eyed

men might have an evolutionary

advantage when they mate with a

blue eyed woman but not vice versa.

http://scienceandreason.blogspot.de/2006/11/why-blue-eyed-men-prefer-blue-eyed.html

Other literature:

http://www.biologynews.net/archives/2006/10/23/blue_eyes_a_clue_to_paternity.html

http://scienceblogs.com/gnxp/wp-content/blogs.dir/461/files/2012/04/i-bc532a7af4fd095e0322b5cc57822348-blueeyeddevil.pdf

http://www.the-scientist.com/?articles.view/articleNo/34015/title/DNA-Reveals-Ancient-Looks/

https://www.eurekalert.org/pub_releases/2010-05/plos-ngi050410.php

http://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1000934

http://link.springer.com/article/10.1007%2Fs00439-007-0460-x

https://www.eurekalert.org/pub_releases/2014-01/snrc-bea012114.php

http://medicalxpress.com/news/2013-01-brown-eyes-trustworthy-blue.html

http://blogs.discovermagazine.com/gnxp/2013/01/sinister-old-blue-eyes

Regards,

Joachim