To further complicate your life, Brian, all that walnut is also going to change color over time...generally lighter to a golden brown. So there is risk with "custom coloring" at the component level as that could possibly show a few years later. Personally, I'd use the same dye overall if you want to color it to mask any differences now, but I generally don't color walnut and cherry because they change so much with time and UV oxidation.
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The most expensive tool is the one you buy "cheaply" and often...