Here's the finished painted maquette. I added foam core to the base so the armature wire isn't a problem. My matte spray actually ended up making it a bit shinier and the outside tacky-feeling. I don't care for that, but I don't want to sand it and repaint it again, lest I lose details. I'm really happy with this final version, and we'll see if any of this gets into the movie. The next step is for me to model them.
Secretly, their designs glow in the dark/night. That is one of the main story points, so I snuck it into my model after the paint job.