It's totally legal in California... even blue... just not red.... and nothing can flash....

..1 - Listen Here - Straight From the CHP
- http://www.autoi.com/images/shopping...about-neon.mp3

California Vehical Code....

25400. (a) Any vehicle may be equipped with a lamp or device on the exterior of the vehicle that emits a diffused nonglaring light of not more than 0.05 candela per square inch of area.

(b) Any diffused nonglaring light shall not display red to the front, but may display other colors. A diffused nonglaring light shall not resemble nor be installed within 12 inches or in such position as to interfere with the visibility or effectiveness of any required lamp, reflector, or other device upon the vehicle.

http://www.dmv.ca.gov/pubs/vctop/d12/vc25400.htm

 

no they are protected by a plastic tube u put around them and the neon that is "hand made" burns brighter but hey get streetglow and u can be on the next fast and the furious lol