Does anyone know what the law is regarding amber lighting products? I know in New York we are allowd to display only one blue light, but can we have amber warning devices? (I know I'd like to have one on the back of my truck for those late nights on the parkway.) Also, I know that some states have blue lights for their police, do I have to cover up my blue light when I go there (eg. MA and CT)? Any help would be great.