I vote black.. Pain in the ass to get silver drives.. (generally have to paint over them) even if it has a front door.. when you open that thing it will look ugly as heck.
and the black case has a lot of more personality.. the silver only has a small black stripe.
I think the black looks best. I don't think the blue light in the front will look bad with the green cathodes in the case. Tell us how you like it when you get it.