Interesting. I painted the sway bar brackets a semi-gloss black, same color as the sway bar itself which appears to be correct now.
But the sleeve clamps had light surface rust so I assumed they were natural finish. I don't recollect seeing any paint remanents. Easily could have been phosphated as that does not last long. Also, from the picture posted, the insides appear dark (phosphate). No chance it could just be the black bushing rubber rubbing off on the inside? Does it appear the outer surfaces were phospated as well? I see light surface rust and natural metal, which is why I'm asking.
No expert, so looking for advice as well.