I'm getting myself psyched up to sand the Mission speakers outside. It's sunny but cold. I had a pair of 770 mk2s a long time ago that were black but battered. I went through black stain to the walnut (or maybe ash?), and some of the residual black went into the grooves of the grain, giving it a beautiful depth and richness. I think these will work that well.
Update: I've done the tops. They're going to look beautiful.