ceramicwombat@myeagle2001 Yep, you can do this by painting them with acrylic craft paint, allowing them to dry, and then scrubbing them vigorously with a rough cloth. For a bloody loo, try a coat of bright red over a coat of dark red. That way the paint will be bright red in the deep crevices with an edging dried blood dark red.
ceramicwombat@Sam1000 That is an unacceptable amount of polishing medium to remain after polishing. It's like the processing crew forgot to clean these at all. Please send this picture to email@example.com. I will also register a complaint with them.
ceramicwombat@Sam1000 I'm sorry Shapeways didn't completely remove the polishing medium from these before sending them out. I have a disclaimer on my dice sets that tend to trap polishing medium, but it's usually not a problem with this set. A pin works best for popping the polishing medium out of crevices.
ceramicwombat@amqueue When you paint on the Shapeways versatile plastic, prime the models with an acrylic clearcoat. The plastic is porous and you will have better results with painting if you seal it with clearcoat first. A second clearcoat after you are done painting will preserve the finish.