This is an LED bulb that Bridgelux is currently working on.
http://news.cnet.com/8301-30966_3-57533990-262/the-lights-over-your-head-are-about-to-get-smart/
http://news.cnet.com/8301-30966_3-57533990-262/the-lights-over-your-head-are-about-to-get-smart/