I did some stain testing the other day and totally forgot to post pictures, so here you go:
Dark mahogany, reg. mahogany, and keyaki. It's hard to tell but the dark mahogany has a nice red glow on the figure, I rather like it however the stain is a bit dark. For a later project I might thin it out some and use it. For the speakers I'm sticking to the natural color.
Here's a closeup of the corner. The joint line is extremely thin and is very difficult to see, especially with a slight chamfer on the corner.