I am putting together a routine where someone being given a driver's test has to demonstrate an understanding of how a traffic light looks. This will use the red green a yellow balls in a stratosphere tower. Anyone have any patter suggestions or thoughts?

How about making him drunk and they keep changing.

Just remember, "Drunk drivers have accidents only because they do not learn to drive drunk." Would go well with this idea.

I've always had fun with the kids by messing up the colors when I name them and dropped them in. htis dummy could answer the question of the order of the lights wrong. The official corrects him, removes the cover to reveal the correct answer, only to find the answer is yellow,green red.
I thik your plot could be very good
I'm working on a redo for Statosphere and need extra spheres. I haven't located them yet. My dealer tried his source. It seems they only want to sell me the trick again. I found some foam tennis balls that will do if I can't get extras.
Gary Poe

I tried painting tennis balls, with a very limited success. My next stop is to find the right sixe plastic ball in a toy store. I am making my own tower, so I can build to fit.

Cliff try one of those ball pit toys. I know red and yellow are available but I'm not sure about green.