Although not the first iPhone-controlled light bulb to market, BlueBulb's Bluetooth Bulb 9W RGB + White ($59) is still interesting, especially because it uses Bluetooth 4 to connect, rather than Wi-Fi. Also available in a 6W version, the bulb simply screws in to a standard outlet. Once it's turned on and you've launched the free companion app, the connection is quick and easy. From there, you can easily switch between what the company claims are more…
