And I wouldn't trust anyone in the US to get the metal right.
OWD
You have a tendency to write some really nutty stuff. Are you kidding me OWD? We have some of the best metal smiths in the world living in our country. Pete Mazur? Ya, I'm sure Pete couldnt get it right. I'm not even gonna name the others that come to mind.
If this gentleman chooses to have work done on his Hussey, there are wood and metal guys here in the U.S. that could have his Hussey looking like a million bucks. Dave Wolf in Waco Tx, would have that wood looking proper for around $800, if the barrels need blacked, a "best" quality job is gonna cost around $400-600, fire blue the screws and action pins for about another $50-$100. All done for the price of a new Benelli autoloader (Yuck).
If you're going to keep the gun, do with it what you please within reason, the above things will clean up the aesthetics, make it more pleasing to your eye. I agree, leave the case colors alone, older guns tend to look very classy and distinguished showing their age on the action.