We just have a looked at a pet shop a few days ago.
Albino budgies
Opaline budgies
More info about this bird here.
(Reference: Wikipedia)
Actually my sons (and daughter), wanted to keep this species as a pet. Firdaus like this "Si-Gebu" very much. Alas, their mother would not allow it. She is afraid of that little hamster, actually not afraid but 'geli' (tickled) on seeing that thick fur thingy.