iBeacon + Philips hue:
Open Hue Remote on iOS and automatically see the Philips hue lights around you.
Just place the Estimote iBeacons in your rooms and name them after your light-groups.
iBeacon + OS X, AppleScript & OSC:
Using Hue Server on OS X every "beacon event" will trigger a dedicated AppleScript on your Mac.
This way you can connect nearly any action to a beacon, from light-scenes and iTunes playlists to other hardware outside your hue system.
Documentation & tutorials can be found on our website:
http://www.hue-remote.com
http://www.hue-remote.com/tutorials