Check eBay. I've seem several set that would function for what you want. I'm looking for bars that I can mount a bike rack to, so I'm looking at name brand ones.
I got the Rhino Rack Aero bars for hauling Kayaks/gear and they work well, hardly notice the change in fuel economy and very little wind noise with the windows up, I can hear when they are down though. Mine are silver.
It took a while to tighten them down by hand with the long allen/hex wrench, I have an extension for my drill to speed things up next time.
Let us know what you find.