You will get pulled over in South Carolina for having red lights on the front or blue lights anywhere on your car or bike.
South Carolina Code SECTION 56-5-170.
(B) Only authorized emergency vehicles and private security patrol vehicles regulated by the State Law Enforcement Division are allowed use or display of any blue lights or red lights. This includes light bars and smaller lights such as dash, deck, or visor lights. To "display" means to be seen, whether activated or not.
I was under the impression that was true in most states but I will have to dig into it more now.
I have been thinking of putting amber strobes on the back of my bike activated by the hazard flashers switch for really low vis.