I cannot view your link (pretty strict firewall here at work) but I am fairly certain I know what you are referring to -- The eye on Albinos often has a bicolour look to it, a lighter pinkish, almost prismatic on the top half. This is perfectly normal and all my Albinos and Candinos have this.
Is this something newer? None of mine have that..however mine are all Old School albino's, starting as long as 21 years ago.