Oh really!  Apparently they can have white, black, brown or mixed fur.  What color were yours?
What color was yours, I have always wanted a white one.  I know they can live up to 10 years so like a puppy dog almost.
I used to own ferrets. Man I miss having them. Aw sorry to hear it.  Did you know that the word ferret comes from a Latin word meaning little thief?   Apparently ferrets like secreting away small things. THey sure our little theives they always hide stuff under the furniture.
They typically have brown, black, white, or mixed fur.