I have been working on this silly design longer than any other project of mine. It constantly stumps me. I have developed at least 4 different versions and may have finally found something that is going to work. The frame for the lamp is 3D printed, though it could be laser cut from acrylic or milled from flat aluminum stock. The dome halves are vacuum formed plastic.
Once I get the final details of the lamp frame and dome correct, I will begin working on the RGB LED lights that will go inside. It should be really cool once I get it working finally.