I think both the ivory and black look good. Can't go wrong either way. I'm not a fan of wooden pickup rings. Maple, maybe, if you can get it to match the natural edge of the top, but even then...
Yeah, I tried it on some Ivory tuning keys. Didn't take very well. At least not as well as the white aftermarket knobs I had.
Heres a similar color in satin with black for comparison. https://reverb.com/item/14883505-pa...594-semi-hollow-custom-color-satin-korina-bod
I voted to try maple but............ I think chrome ones would really work well but I don’t think you can find chrome for the narrow field. I don’t think black would work, Rosewood 2nd place. My 2 cents