This steve modell was designed to easily print on any printer. The head is separate from the body, and connected wia a pin, so later it can be glued together.
If you print the head part from it's back side(so the face part is up), than you can also play with coloring the print with just one extruder. It's easy to do in prusa's own slicer, but also other slicers like cura is capable to do. Just set a breakpoint where you want to change color, and the printer will stop, and you can make the color change.
If there's anything I can help you with, just let me know, and I'll try my best to help you.