Many of us here have used Rust Oleum 7272830 Dark Bronze for our interiors. It's almost a perfect match for the original "champagne" color. It will take almost a dozen cans to do the complete interior. You can order it by the case at your local hardware store or online. A case contains 6 cans. One of the things I like about it, is you can touch up an area without it showing and not have to completely repaint an entire panel. Here's my GMC done in it.
52 GMC dash
