Some are three wire but if both leads are engergized you get a totally different colour. Some are two wire and by reversing polarity you get a different colour from the other polarity. But only one can be used at a time.
However all the ones I'm aware of are tiny meant for control panels indicators.
THe CREE led makers might be worth asking as they make high power leds. Maybe they make a suitable bulb.
As for a finished light ,there may be somewhere, but not that I'm aware of.