So I have actually been looking for a new rectifier board recently for a Space Invaders I'm in the process of restoring.
I feel guilty saying this, but the color would hold me back.
As much as I love the red color, I would probably go with green as its the traditional color and would match the rest of the boards and the original look.
I think that having both available would be nice as the red is a pretty darn good looking color on that board and green provides the original\traditional look.

I know it wont be completely original, but my current board looks more like a pizza that was left in the oven overnight at 450° than a rectifier board. Having a red board would stand out where as the green would look far more like it came that way from the factory.

This is Exactly why I want this board... in green.