While the original model would have already been pretty cool printed in black, I decided to test transparent PLA from Ultimaker.
The best results were obtained printing at low speed (20 mm/s) with 0% infill, 1.2 mm shell, 210°C and layers of 0.1mm. Printing with a full infill stops the light and its hard to light it correctly. At higher speed (50 mm/s) PLA becomes brilliant (might also be a temperature factor, but I did not tested it).
Now, it would be great to make a light stand for this one.