Sheet metal company could make you one out of Painted Coil Stock or a lumberyard locally(not HD or Lowes) may have a company that has standard size roof's out of the same material.

Thanks... I will check online to see if I can find any pics of what a painted coil stock roof would look like.

rae74- we've been researching the same thing and after talking with a few different metal roof contractors, have found that some of the metal roofs can be cut & curved to give the same curb appeal as a curved copper roof & you've got your choice of colors. They can make the roof in the warehouse or onsite. If you don't like the curved look, I have seen a few metal roofs that are simply angled above the bay windows, so you've got a couple different options : ) I hope the link below works...pics of different types of bay windows from the exterior & interior.

Here is a link that might be useful: Bay Window Pics