Yeah, when you look at other controls for firing Emma-Gee's in WWI a/c, one doesn't see *red* as we find later on. As Bo said, not saying it couldn't be, but . . . . it just doesn't follow the trend during the period. In fact, aside from B&W instruments, one doesn't usually find ANY color per se on controls, dials, etc. The one exception I can think of is the red on a compass needle.
My Two Kopecks,
Warren
