When I typed these words, I was thinking about the Duometre, indeed.
What I meant was that AT LEAST the color code could be different, and if the shape of the hands are, too, it is even better, of course.
The Duometre à Chronograph is one of the nicest example of a perfect integration of a Chronograph in a watch.
While on other Chronographs, the Chrono function is secondary ( small subdials, not often easily legible ), on the Duometre, the Chrono is as important as the time.
Best, Damien.
Nicolas.