How come their fur are white ,when juda’s are black?

daato's hair

They have daato's hair and eye color <3

Apparently from what I noticed, when the beast is born they get the trait of hair colour and eyes colour from their omega mother

The fur in the beast resembled their hair, there's a a short episode in remnant of jujin where juuda transform into human and he had white skin and black hair just like his mother and in the beast form he had black fur. The twins probably had white fur, because it's their mother hair trait