Circular lithophane with color changing light

Circular lithophane made as a retirement gift for my boss. Circular lithophane sized to 166mm diameter, used http://3dp.rocks/lithophane/ (one of the good lithophane design sites).
3D images of proteins we worked on were pulled from http://www.rcsb.org/. Support was only for the inside of the top ring, the rest should print fine without.
After making this I also designed lower profile (thin) top ring and base as alternative parts for future builds (included in files along with solid top).