LYFT Glow Mustache - Illegal in California?

I was pricking up a rider at John Wayne Airport, where it is permissible by law, and once everyone was in the car there was a that familiar tap tap tap on my driver side window.

I was informed by a member of the Orange County Sheriff's Dept. that the glowing Lyft mustache on my dash was illegal. I got off with a warning, took it off the dash and went on my way.

After waiting a day for an official word from LYFT, I decided to investigate this myself.

According to the California Legal Code page at: http://www.leginfo.ca.gov, the deputy was correct:

24003.  No vehicle shall be equipped with any lamp or illuminating
device not required or permitted in this code, nor shall any lamp or
illuminating device be mounted inside a vehicle unless specifically
permitted by this code. This section does not apply to:
   (a) Interior lamps such as door, brake and instrument lamps, and
map, dash, and dome lamps designed and used for the purpose of
illuminating the interior of the vehicle.
   (b) Lamps needed in the operation or utilization of those vehicles
mentioned in Section 25801, or vehicles used by public utilities in
the repair or maintenance of their service, or used only for the
illumination of cargo space of a vehicle while loading or unloading.
   (c) Warning lamps mounted inside an authorized emergency vehicle
and meeting requirements established by the department.

Drivers may keep the stache on the dash but should not operate the light function while operating the vehicle.

Since the light is used to help riders located the driver's car it may or may not be permitted by law to switch it on once you arrived to the pick up location as you tap ARRIVED on the app. Once the riders are in the car switch off the glow stache and commence the ride.