Nathan and others who assist:
I'd just like to thank you for the amazing capabilities of the Hue plugin. I was about to post a request for an extremely edge case, frivolous use of Hue to trigger a non-Hue light to match colors via Indigo when I checked to see if it was already possible to create a trigger based on a Hue light changing color. And of course, it is!
Now I can make my Nanoleafs match my Hues.
Related though: How many triggering events is too many for the hub to manage? The hub would be TELLING Indigo, not responding, but it would be telling potentially multiple times a second, since my use case is to make my Nanoleaf match the Hue as it responds to changes on the TV screen.