In the Thanksgiving weekend article on the McClelland website they wrote an article saying that "the rainbow convergence could test 0" if the S&P rose last week and if it turned the oscillator in doing so, "that would be a signal to the end of the downward move, if not then continuation downward"?
I still think it should be taken with a grain of salt, but I've been keeping on it to learn it and when it can be useful.