I am not sure this is what you are looking for, but I purchased some Bally Rollovers from here. https://www.thingiverse.com/thing:4435249
I believe you should be able to pick the color as well. Looks like it might be re-designed a bit, but I have no idea if this is what you are looking for. Someone should be able to make a 3D printed part for you though I would think. Good luck.