KS state laws on Vehicle Lighting
Lights visible to the front of a vehicle must be white to amber. On vehicles manufactured prior to July 1, 1973, the front turn signals may emit a white light. The front turn signals of all newer vehicles must emit an amber light. Kansas registered vehicles are prohibited from being equipped with tinted/non-transparent headlamp covers.
Lights visible to the rear of a vehicle must be amber to red, with the exception of the registration and back-up lamps. Every vehicle must have a white light illuminating the vehicle's rear license tag when the headlamps and tail lamps are activated. Reflectors visible from the rear of a vehicle must be red.
Lights and reflectors visible from the side of a vehicle must be amber toward the front of the vehicle and red toward the rear of the vehicle.
In addition, vehicles may be equipped with the following optional lights:
One amber or white running board courtesy light on each side.
Two side cowl or fender lamps emitting an amber or white light.
Two white spot lamps mounted on the front of the vehicle.
One or more white reverse lamps that operate only when the vehicle is in reverse.
Two white to amber fog lamps mounted on the front of the vehicle and used only in conjunction with the low beam headlamps.
Two white to amber auxiliary passing lamps mounted on the front of the vehicle.
Two white to amber auxiliary driving lamps mounted on the front of the vehicle.
The only flashing lights permitted on non-emergency vehicles are turn signals, hazard warning lamps, and warning lights on school, church, and daycare buses.
From the KHP website: FAQs-Vehicle Equipment