The only lights that are "legal" on any car, in any state are as follows:
Front: No less than two clear headlights but no more than 2 high beams and 2 low beams. There must also be a minimum of one amber directional signal per corner as well as one amber side marker per corner (can be contained in single housing). No other lights or colors are legal for opperation on public road ways.
Rear: No less than 2 red tail lights, 2 red brake lights (later model vehicles also required to have a third center mounted red brake light), one red or amber directional signal per corner, as well as one red reflector per corner, one red side marker per corner, some form of clear light that is only luminated when the vehicle is in reverse and one clear licence plate light assembley. Anything else is illegal for use on public roadways.
Now we know that very few places inforce all of theese rules to the book, but anything that varries from the set regulations is just asking for a reason to be pulled over. If you don't mind getting stopped and warned feel free to do whatever you want to your vehicle, but don't complain when it does happen, since your the one that brought it on.