Do they always end up loosing their color? I've seen some lovely ones on Aquabid, but if they end up loosing their color and becoming all white then I wouldn't (personally) want to buy one.
I'm just curious because someday I would like to get a Betta from somewhere other than a chain pet store, so that I could get something very pretty and hopefully raised in better conditions.
I love the colors and patterns some marble colored Bettas have. :) But, if they turn pure white with age I'll know that is a color pattern to avoid.