Visual distinction between lights and nearby lights in the Lights info display

It's annoyed me for a while that we can't tell which 6 nearby lights are being picked to light (there's the Advanced / Rendering / Info Display / Lights, but that only shows all lights, it doesn't visually distinguish between an active light and an inactive one).

http://jira.secondlife.com/browse/VWR-7587

There's a screenshot of how it would look attached to the JIRA.