It’s a simple reality that walnut used in woodworking projects has two troublesome traits. First, the natural dark color of walnut will fade over time due to UV light exposure. The process is slow, but it happens. Second, walnut lumber contains some pale sapwood, depending on your tastes, you either like it or not. However, there is a very easy way to make the color last a long time, make the heartwood and sapwood blend, and still maintain a nice, dark, chocolatey walnut color that’ll make your projects look beautiful.