FYI for us Caulifornians. Her is a copy and paste from the Vehicle code. Just my tax free opinion.
"V C Section 25950 Color of Lamps and Reflectors Color of Lamps and Reflectors
25950. This section applies to the color of lamps and to any reflector exhibiting or reflecting perceptible light of 0.05 candela or more per foot-candle of incident illumination. Unless provided otherwise, the color of lamps and reflectors upon a vehicle shall be as follows:
(a) The emitted light from all lamps and the reflected light from all reflectors, visible from in front of a vehicle, shall be white or yellow, except as follows:
(1) Rear side marker lamps required by Section 25100 may show red to the front.
(2) The color of foglamps described in Section 24403 may be in the color spectrum from white to yellow.........................................