Since I really don't have 200 years for my SMR to develop a natural patina, something had to be done. The cherry bed in my old pickup still looked like a carrot after 3 years, so it was the guinea pig.
The cherry gun stock is aged with easy off oven cleaner for 9 minutes at 60*, then wiped off. If you rinse with water the cherry will turn black, so don't do that unless you want a black gun. After that, the rifle was finished with Danish Oil, Natural. This soaks into the wood and strengthens it.
The old pickup bed that still looked like a carrot turned out pretty good too.