It might be interesting to offer other colors. The black parts would always be black, but the white parts could be grey/silver for a standard saber or any other color available in the correct plastic for a variety of themes. It seems like the concept has a great deal of potential beyond just a "Stormtrooperized" saber. That's what I think anyway.
The only hitch I can think of would be correctly colored D-rings, but you could substitue black prequel style clips/buttons (I can't for the life of me remember their name, but I'm sure I will as soon as I hit the submit button).