regular paint and high heat is a bad idea. Most paints are able to withstand about 300F for a short time before begining to break down. I know the enamel doesn't get that hot often but I would suggest to see if you can get a clear resin from the people that make the stove paints and add some Bronze Powder directly into it. Bronze powder is pretty easy to obtain, as are other metal powders, and was known as "antique gold" in the paint industry.
Now, you might be able to use something like this:http://www.caswellplating.com/vht/dupli ... ramic.html
Stove Bright has similar products:http://www.northlineexpress.com/itemdes ... c=5SA-8123
These are in aerosol, but a trick I've done before is to spray the paint into a cup, and then use a brush for hand application.