This design is based on a 3D model of the internal structure of the clitoris. (The educational project is described at https://carrefour-numerique.cite-sciences.fr/fablab/wiki/doku.php?id=projets:clitoris.) This design has been modified from the source in the following ways: It is 3 times larger than life scale, it is hollow with a 2 mm wall rather than solid, and it has 3 2cm holes on the back side. The .stl file of this design is licensed under a cc-by-nc-sa license and is available upon request.
At this size, only certain materials and colors are available from the printer. Here is a tutorial on painting the white strong and flexible plastic:
https://www.shapeways.com/tutorials/painting3dprintedsls.