Alkay, as I said before a redish or brown stain will look excellent. As the surface of the spalted maple is pretty rough surface I suggest give it a light sand with 320 grit. Then look at grain filling it with Timbermate. The darkest colour is ebony but that will really make the grain pop.
Apply a Timbermate and water slurry and wipe it over the body. Be worth masking the binding. Sand that off the cap with 320 grit and then a light 400 grit sand of the cap.
Rest of the body I assume is basswood so you can sand that 180 grit to about 360/400 should be enough
just be super careful usually these veneers are only about half a mm thick so very easy to sand through. On the safe side don't worry if the veneer isn't 100% flat, be better than sanding through and revealing the timber underneath