Painting them will keep them from rusting and looking like crap, I know it's pricey but the G2 kits are very durable. Normally calipers look rusted and crappy after 1 winter in Ohio... 2 years now with no difference in color or finish. just only mix half the kit to begin.
I painted mine orange, go ahead and flame lol. I plan on adding very small touches of orange throughout the interior and possibly some extremely small touches on the exterior to match.