Just a picture I found on Steve Irwin's website. The croc hunter has these two in his Zoo in Australia. Although the white one is very striking notice that the darker one appears to be axanthic or something and is lacking the yellows of a normal burm.

the webpage they can be found on is here... http://www.crocodilehunter.com/australia_zoo/our_amazing_animals_new/reptiles/non_venomous_%20snakes.html