I'm trying to vectorize this Gray's anatomy diagram from the Wikimedia commons:
(Yeah, I know. Kind of an awkward image, but I'm a medical student studying Urology and we need good medical diagrams too.)
I'm trying to find a way to replicate the spongy texture in the image in the least painful way possible. I've looked into using texture images and masking, but the textures I've found are either the wrong color or just too jarringly different from the cartoon-y diagrammatic style of the rest of the image.
I'm trying to avoid having to hand-draw tons of little shadows/pores here, but if that's what it takes, any suggestions on how to do that efficiently would also be appreciated.