Because people are stupid enough to be taken in by the hype that they are "rare", check out the litters on DOL alone & they outnumber every other colour. :rolleyes:
Pity the colour doesn't fit the standard as well, it is impossible to have the right pigmentation on a dilute (and that is all a blue is ...... a dilute black/brindle, same as fawn is dilute red).
(Not biased or anything) So says somebody sitting here with 2 brindles & 2 very dark red sitting at her feet.