Some states allow emergency responders to outfit their Privately Owned Vehicles with emergency lights, provided they store certain equipment (eg. EMS personnel carrying a first aid kit and/or defib). That way, even an off-duty member can respond to an emergency while in their own car. Maybe one day that emergency is saving your life.
So it is entirely possible to see a Camaro outfitted with LEGAL emergency lights.
Now, the law, written by your own elected officials, states no forward-facing red lights and no blue lights are allowed on non-emergency vehicles while in motion on any public road. Respect it. By contravening this law, you are hurting someone: the credibility of actual emergency personnel who rely on citizens seeing their emergency vehicles and actually moving over instead of just mistaking them for another ricer moron who decided blue halos would "look dope cuz yolo n shit".