Hi Singlemalt,I mop yellow aniline dye on the black walnut. Depending on the result, I may sand it back a little with maroon Scotch-Brite pads. Some black walnut may need a little reddish brown dye on top of the yellow but not all. Laurel Mountain Forge's walnut stain has a pretty good red-brown hue that works as well on top of yellow. The color and finish on my fowler look better in person than in the photos. dave