I considered the wax, but I'm looking for less Brazilian rosewood (which is lovely) and more pitch black ebony. It'll probably make more sense when I finally get all the parts in and get to work on the bass itself, but it's going to be all black with gold hardware, and I want it pitch black. I've got an Epi Grabber/Ripper, can't remember which, that I repainted with that Black 2.0 paint which was great, but wear and tear has worn through the paint in a lot of places, and I want this bass to be jet black as much as possible.
That leather dye result looks the business, a few coats of it looks like it'll get as dark as I'm looking for.