Highlight playing ambient sound actors in World Outliner

I have a bunch of ambient sound actors in my level and, for debugging purposes, I would like to be able to quickly know which ones are currently playing. I can print out messages in the log but I don’t find it very user friendly. I just want to quickly know which actors are playing.

Something that would quite well for me would be for the ambient sound actors to be highlighted in the World Outliner when they start playing. Is it something that is currently available (or doable from code)?