I've never seen someone make molding like that already comes chrome looking. The best way to do that would be to send the molding out and have it "chromed" by a shop. It's not actual chrome, but it looks and shines just like it, it's just not as durable as an actual chrome-plated piece. It's called "Vacuum Metalizing", and there are plenty of places out there that will do it in small and very specific applications for the average consumer. Just Google it, and you'll find plenty of places to choose from.