I use the awesome iRobot Scheduler integration as well and have a rule that;
- When vacuuming starts, captures the current stats of my lights and saves it (in a scene)
- Turns on all of my relavent lights (stored in a scene)
- When cleaning stops, restores the lights to how they were before cleaning started.
Pretty simple and works great!
For capturing to a scene I use the device created in the Scenes settings shown here.

