There are two versions, one version is for printing the black applications by changing the filament at a certain layer height, the other version is for printing it as one piece using in layer filament change (like with a MMU)
You can seperate the whole model and print everything as a single piece, which will improve print time.
I have used Crystal Clear PLA from Filamentum for the outer ring, Prusament Silver PLA for the main parts and Prusament Galaxy Black for the black parts.
The foot has space for an Arduino Micro USB and the whole design is for using a 16 LED multicolor LED strip.
Here's a little Youtube video where I explain a few things about this:
The author hasn't provided the model origin yet.