Order of preference for me is:
Gold - looks good and matches the hardware
Ebony - goes well with tuner buttons and TRC
Snakewood - pretty but looks out of place on this guitar.
I think it would look better with black pup rings regardless. I'd go with ebony if using the ebony tuner buttons, otherwise black plastic.
I went thru kind of the same thing with my 594 but didn't find any custom buttons that were a big enough improvement over the stock chrome to make it worth the trouble. My toilet has chrome hardware, I could put a fancy wood flush lever on there. Yeah it might look nicer than the chrome side by side but doesn't really improve the toilet as a whole enough to make it worth the effort.
At first I wanted to do something to personalize it and make it unique but then I realized it already is. I've never seen another one like it and doubt I ever will since it's a one off Wood Library run from Eddie's. What really makes it special is the overall design, attention to detail and high quality craftsmanship. What really makes it mine isn't some little customization or even the sales receipt... it's my hands playing it