no recipe or method. Alot of it depends on how the fur is sculpted (spikey, flowing, Goodwin's skaven which have.. kinda spotty fur), what type of fur it's meant to be etc (short hair, thick hair etc)
yet to see some types of fur done right because they are almost impossible.. like Polar bears where you can see the long transparent guard hairs on top of the short undercoat and the salt. People keep trying to claim they look white but I've never seen a white polar bear (outside of cartoons).. they are always grey-yellow when I see them... I don't think I have any form of colour blindness..
Most fur based animals ALWAYS have patches of the skin visible and more so with lighter fur colours, which lead to some colour bleed or effect on the fur itself with the whole UV indexing and stuff cause colour is weird to me.. well, when I think about colour.. how it's all partly subjective cause everyone's eyes are slightly different, and how colour can change greatly in the light.. It's like how you have some birds which look like Metallica's on them cause the colour can really change based on the angle the light is hitting them..
of course, speaking of birds, feathers is a whole different kettle of fish..
Oh and I'm not great at painting or anything but I mostly treat difference fur types as different materials.