I went with the tan ultimately. It kept the natural tone thing going which the white didn't.
It was a bit of an experiment finding double sided tape which stuck to the bass - I ended up having to clean some of the Lemon oil off with a detergent spray for the Mammoth Powerful Grip tape to stick. A firm press/ rub over on the leather with the handle of a Stanley knife encouraged better adhesion.
Going to let it settle before the final step of checking the wiring and plugging it in.
Here it is: