I don't know about you, but I find these links were usefu when pondering sonas outlook:
http://en.wikipedia.org/wiki/Eye_color (http://en.wikipedia.org/wiki/Eye_color)
http://en.wikipedia.org/wiki/Hair_color (http://en.wikipedia.org/wiki/Hair_color)
http://www.dosfordonts.com/haircolor.html (http://www.dosfordonts.com/haircolor.html)
Don't we just love wikipedia?
*mutters: and everyone else has been using them for years, and I just found them now*