After looking at your photos, I tend to agree with your first choices:
Black on Black is gorgeous. That's a no-brainer right there!
Surf Green/Blue looks great with the pearloid.
White looks nice with the tort, don't like the gold at all.... honestly though I like it best with the stock pickguard. It appears to have an aged yellowish tint to it when set against the bright white background of the body.
BTW, I know you don't like tort on black, but humor me would you and photoshop one up please? You're pretty good at it! It also might help me decide whether I'd like to repaint my Vista black and slap a tort guard on it
Nice basses BTW!