Al, I was under the assumption that the color blind inspector could take a number of different methods of approaching this issue.
One being that the company Level III could give specific work instructions and a specialized practical test, and then as long as the inspector could still distinguish enough to use the acceptable and unacceptable criteria and pass the practical test, that they could waive the traditional color blind test of finding the numbers in the mixed up dots of colors.
I certainly see how the concern over some of the situations that you mentioned are warranted though.