Yeah there lenses are impossible to find especially here on the east coast. I ended up going with Clear Chrome Orange over the Smoke Pink Mirror or whatever it's called. Now I'm debating whether hustling to find the hard case from them is worth it or if I should just buy the Dakine Goggle case that matches my bag!
Any store you can find locally that carrys von zipper sunglasses or any other von zipper products can order you whatever you need from them. We have a shop called Zumiez here that can order all there stuff. There stuff is prety hard to get without a special order from a local shop. Not much of an online company which is to some extent why I like them. You just don't see an overwhelming number of people wearing Von Zipper stuff which is what kind of makes them fun to own.