Squelch Signal Indicator on the Slice Flag

When the squelch is set for a slice, I'd like to see some indicator on the flag to show when a signal is breaking the squelch and passing audio.

Rationale: I have 4 slices in operation, all of them squelched. When one of them gets noisy and starts to break the squelch, I'd like a visual indicator on the flag to see which slice it is. Without this, I have to manually play with the squelch settings for each slice to find the noisy one and reset the squelch level slider.