Thanks Kirby for the awesome design.
Use PLA because of it's crispness and lack of deformation/shrinkage.
Achieve incredible gloss finish using XTC-3D. Made vinyl cutouts on a Cricut machine and embedded them on the resin. For the light I used a couple of old color LED lights from IKEA and a polarizing filter from an old LCD screen to cover and diffuse.
Super simple circuit, used a resistor to tone down the green so I git a richer orange.