I've been playing with a formula combination that lxh posted with a piece at Fractal Forums. If you haven't checked out his work, you really need to, he's done some stunning work. The formula combination he used is Amazing Surf / _RotatedFolding / _FoldingTetra3d / _addC and you can check out some of his images here [link] and [link].
I spent three long hard days just finding a sweet spot I liked to start working with.
Strange inscriptions hidden in the structure, meaning that if you don't add it to your fav, you'll be gone in 7 days...lol I didn't see these inscriptions until i duplicate the layer in CS and adjust it to overlay. Hidden structures in MBD cause the light settings, I guess. For those who want to tweak, please send at least a link of what you have done: