Apparently the code used in the forum doesn't render the % sign properly in a link so it left a space in the url.
Here's a tiny url for the page Alan linked to.
http://tinyurl.com/2puwbe
I too have read that pigment develops last, and is one explanation for several "leucistic" appearing hatchlings that died sometime prior to hatching.
I remember several years ago Tracy Barker posted a pic of such a neonate and considered that the reason it was white.