Having used smoke, blue, and green faceplates in my car, I would revise your scale and add in the completely clear (not smoked) plates that darkstorm has available like such:

Clear > Smoke > Blue > Green > Amber > Red

I have never used the clear ones but they *must* be a little more visible than smoke simply because smoke filters a tiny bit of the light out.

I have used a couple different flavors of blue, but I hear there's a new blue that people have been getting that's a little darker than it used to be on the Mk2's. But my major point is that smoke colored is definitely brighter than blue.