Try some of these sites:
http://www.leopardgecko.co.uk/docume...ecko-morph.htm
http://www.paulsagereptiles.com/LeopardGenetics.htm
http://www.hisss.net/morphs.shtml (i only look at the pictures for reference)

I haven't encountered a website documenting the color changes from hatchling to adult, most of the morph pictures I see are of juveniles and adults.. only a few actually show hatchlings bec. the coloration hasn't fully developed yet to properly show what that morph looks like. And I agree, making a website showing the color changes would be a great idea