Quote - You must mean that the artist doesn't know what shade of gray to use, not that they don't know where the freckles should be stronger versus weaker or non-existant, right?

Actually I think your idea of this and the texture artist's are not going to match for the first tries at any of these maps, but I am pessimistic - thus, rarely disappointed.  Maybe you should just formally ask for this in a new thread and state exactly what your requirements are, with some blatant title like "Some texture artist help me with some grayscale maps for a new skin shader" and see who steps forward, I'd be very happy to be wrong :)

My Freebies