Ok, so I'm Canadian, but the same rules apply up here.
BUT, I not only have Glo-riders that are blue on the front hubs, I also have a blue Larson scanner (knight rider light) on the front of my RT. I come down to the states often, a few times a year, and only once have I had even a questioning look. It was from a boarder officer who said something like " I haven't seen those before" when I asked if he was talking about the spyder, he said no... the glo riders. But that was the end of it.
My glo-riders were a special deal at the time. There is no remote, no color change, always on when the bike moves. The larson scanner is on a switch, but I do ride with it on a lot. HOWEVER, it is a scanner that I made, and the lights are not bright. They are visible in daylight, but barely. The switch also turns on blue running lights under the bike (not visible in daylight), and a lite-up from Sue Hopper (also blue) where the BRP emblem was in the frunk. Yes, I know I take my chances with it, but in 3 seasons, have had no issues in either country.
Ray