I very much doubt it is the albino Gene, very hard ot come bye these days, you probably just have the false albinos that are yellowish and have black eyes, trust me when i say this, i have females exactly the same, and whent he fry come out of the gravid spot they have black eyes.
Generally guppys drop in the early hours of the morning not at night, and if you want to save more then i would suggest a breeders box that have V in it.
Shae