Some more test renders with a fur coat and Victoria4.
No styling at all, just enabled all the coat follicles, grown the hair, rendered.
In the leopard-scheme fur coat, I wasn’t very precise painting the texture (see the areas highlighted in red in the no-fur image, which show the issues that break the tile pattern), but you get the idea: colors are transferred from the object texture to the curves automatically (that’s optional of course).