Still not having tested this, thanks for the info that they go from white to green. I would very much like to show them only when someone speaks as well (do they have any other function, e.g. does clicking them bring up a menu you would need?).
Unfortunately I can't think of any way to get this done - you could probably use OnShow events to check their color and only show when green, but currently I can't think of a way to hide them again once they have been green for the first time (for lack of an event triggering another color check at that time).
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