new OCP program would be to scan your head and develop a pair, with ANY material of your choice (eg. wood, CF, precious materials etc...), and the pair would envelop your face shape perfectly. now that would be custom!
Someone mentioned fiberglass above. That's not such a bad idea. Maybe some space age fiberglass could be in Oakley's future, like what's in this helmet:
I would not be surprised if Oakley works with Tegris one day. It's used in armoured military vehicles, Nascars and sporting equipment...right up their alley.
Going WAY into the future...perhaps the use of nanotech such as shape-shifting materials for eyewear? Sunglasses can be foldered into your wallet and then transforms back into shape in front of your eyes when exposed to a current or light.