wrote:

I have just redid my bathroom and the hardware have a bronze finish. I
would like the A/C vent covers match the hardware as much possible. Is
there a paint solution to this problem? (I saw bronze finish vent
covers for around $70 on the internet, which I find too high.)

Matching oil-rubbed bronze fixtures is extremely difficult. Even
though it is supposed to be a standard finish - US10D - the fixture
colors are all over the place, the paint colors are all over the place
and the "standard" finish is, in this case, largely hypothetical.

Only way to know if you can get close enough is to buy some, try it,
and see if it meets your approval. If the registers aren't right next
to the fixtures, good enough is good enough.

R