The only commercially available non-ebony boards I know of are the Engelhardt boards, which are made of jatoba (ie "Brazilian cherry").
They are very nice looking, look alot like Rosewood, and are proving to be a long lasting, inexpensive material for fingerboards.
The wood can be fairly light colored when new, but turns a deeper dark red over time.
Might want to see how the dimensions compare to your stock board.
Now I'll let everyone else here talk you into an ebony board.
