A red tortoise 'guard looks sweet to me on a white body. I prefer rosewood for fingerboards, but I'd swing toward maple here. Second preference would be parchment. In equal third would come aged white/aged white pearloid, then three ply black or black pearloid. White white doesn't work for me, maybe an aged white 3 ply with the black centre or a light mint green. Smeg it. Invest in a range and try them out.