I was considering cherry red, black, purple, or just using the finishing oil over the wood by itself if I get a good grain in my order.

Black is more to cover up possible rotten grain patterns the best I can, since I know a ric bass and a black finish go together like China and copyright infringement. Though with an ebony fretboard maybe it would look really sleek and kinda badass in black... I just dunno how the grain would look since this is my first mahogany guitar project.