Nah, I was thinking of hacking their power source, i.e internally they use a 12v transformer, followed by a rectifier (to convert it to DC), I want to pretty much gate that powersource with a mosfet (or may be a TIP120 will do), rest my DIY controller can do (or any other controller)..
It is unlikely that the bulb will look like a bulb if I take this route, the LEDs will be pretty much down to a puck (like the kessil), and the transformer might reside inside the controller housing. The only reason I want to do this, is it will make a 18/20 watt, dimmable lighting with controller within 60$ .