it's a FEDERAL law that headlights must be white...or close to it. and the ONLY colors that can point forward are white and amber. and the only colors that can point rearward are white, red and amber.
if it doesnt have a DOT stamp on it you can, and likely will at some point or another...get a ticket for it.
also, it doesnt matter what state you're in, tampering with headlamps is illegal. you can only replace lamps with replacement bulbs. so all these who put on 'angel eyes' or projector lenses...can be issued a ticket and it will stick.
also, on another note, just cuz it's got a DOT sticker/stamp on it, doesnt mean it's legal. 55w has been designated as a low beam, and 65w has been designated as a high beam wattage. anything more and you're no longer legal.
but, i've never seen anyone get tickets for headlamps unless they also had springs/tint/strobes or other 'attention getters' and they were being retarded with the cops.