bad colours are just natural colors so generally just work better for camoflage. now for how long a herd lives would depend entirely on there leader, id have alot more faith in a toughie who has been a feral since birth over a smarty anyday, you could even make the argument that if you are born feral and have had to fight to survive from birth you are a “toughie” anyway. however say you are born a feral and have lived a couple years you would not be very attractive as far as how you would expect a fluffy to look and act, alot of scars and a short temperment for herd members who refused to follow. and would have a select group of his strongest fluffs to lead and help teach.
as far as how they would look i love this imagine for carniviousduck