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Oil Rubbed Bronze
Yes you can buy the Oil Rubbed Bronze as pictured above as just a paint or paint and primer combo. I actually primered mine first with rustoleum white primer for metal. Let it dry for a few hours then painted over it with the oil rubbed bronze paint. I used the paint primer combo on ceiling fans and it works well also, but with using a vacuum over the vents I wanted to make sure they had a good primer on first and a year later they've held up nicely with no paint chips!
Thanks for the helpful details, Shawn!