Dan Wesson is still in business under a new owner, you could contact them for a cost estimate, or a good gunsmith could hot blue it for a durable and nice looking finish. You probably should do some research on this as some gun makers use different blues in color appearance, such as Colt and Harrington Richardson used the nicest black/blued colors I have ever seen, whereas, Smith and Wesson used a blacker look.
I have used some of the cold blues for touch up, but I was told years ago that the hot blue is more durable and colors more consistant. Try looking at color photos of Dan Wessons, or go to a gun show and observe some representations that may interest you. :grin: