Sadly, just a prototype right now, but this would be very cool!
From James Trew … Bluetooth Bulb lets you switch on, time, dim and color your lighting from your phone:
The Bluetooth Bulb lets you pair your phone with one or more of the lights in your home, and then control them via an app. Switch them on, off, change brightness, set a timer, and a special RGB bulb even lets you change the color ambiance. If you're worried about the cost and waste when these things burn out, fear not, as apparently every part is replaceable -- and as there's no home automation system involved -- you won't need anything else to get set up.