Yep...Rick is right. No one wants a carbon fiber chrome wrapped trim piece on a tri-five. I wouldn't even want that and I'm definitely not a purist. I might want painted carbon fiber trim or bumpers/guards...maybe, but probably not. I just don't care enough and most other likely don't either. And when there's no real market for a product, well, it's not a product worth making.
I'm sure if I had a set of eyebrows that we could model it in 3D using one of our scanners and then print it in polycast or in carbon fiber. I wouldn't have any way of getting them into cast stainless though. And even if I did, I doubt it'd be any cheaper than what's on the market now. You know why billet door handles are expensive? Because people buy them at those prices. Frankly, it would be easier to take a pre-existing set of eyebrows and make a cast from them...there's no good reason to print them.
3D printing is really cool, but it's not a panacea.
I could see printing '57 bumper bullets in carbon fiber. That'd be easy. Hmm.