It’s a common thing that people don’t understand which color of fencing scoring lights belongs to which fencer. Parents often watch their children in a bout and don’t understand what’s going on and who’s scored.
That’s especially true in a large venue like at an NAC or at the majority of clubs, where the lights oriented differently. That makes it very hard for parents and spectators, particularly novice parents and spectators, to guess who among the fencing competitors has scored. They find themselves having to rely totally on the final hand gesture of the referee, and that can take a lot of the fun out of watching fencing.