I have a circa 1890 Brit gun that is stocked with a beautiful piece of (what I have been told) is Circassian. When I first got the gun it was so dark that you could not see the grain. I had professionally stripped, checkering recut and oil finished by a stock maker but now it looks "light" What would be the "proper" coloration for an english gun of that vintage and what is the best way to achieve it?