I think the furthest we'd want to contrast would be silver mirrored, as blue would be tough to look just right. you can't go wrong with the contrast of black, or a dark stained wood for a base layer.
Others have mentioned that the saber itself needs to be the eye catcher, but in reality, it always is. I really liked what was done with the halo saber stand with the floating rings, but, I definitely don't want anything covering the front of the saber. The saber itself is very symmetrical, so it isn't necessary to have a mirrored surface on the rear side of the stand to show any details that you won't already see. It wouldn't be bad to have a reflective surface on the rear side of the saber, but it just isn't as necessary as a reflective surface on the top of the base for this particular saber.
@WAT, another few questions. If the charge port goes in the pommel, the pli goes in the control box, and a rice port goes in the covertec, how is this saber going to open up? I'm already thinking of recessing the pli so the grip moves freely (which would require that the rice port was moved unless the grip separates at the "pipe" section), but something has to be able to open somewhere for sd card access.
Whether or not we get the rice port in the covertec, will we still have the greeblie that sits in the middle of the covertec knob? It would have to be a plug for the rice port if that option was used I guess.
Will the holes be pre drilled for the switches based on the option that we choose? I see that you said you will be including parts to add switches to the control box, but does that mean we will have to drill our own holes there?