It's a lot of masking with whatever you do, but you have options:
1. Touch-up gun (small spray gun) & auto paint
2. Rattle can in textured or hammered or whatever
I like to do something that matches or works with the interior and isn't too difficult to touch up later; for example, I shot the cage in my B5/B7 interior in a low-gloss B7 color.
You'll also need a lot of light, to make sure you properly cover all the tubes before you unmask the car.