The feature you are talking about is a dual color LED. The lamps are available from numerous web sites. You need to pull the lens and see what style lamp is installed. As far as using the lamps in other places, the fixture will need two hot wires, one for each color, or one hot wire that powers the lamp with on both hot legs, in other words a switch that has a hot center pin, and switchable hot pins. Normally called a single pole, double throw (SPDT). The fixture is the issue, not the lamps.