Avoid blue & red lights.

can confirm. got a ticket + court date for running a blue uber sign on my dash in Miami-Dade, Florida . most states have code that prohibits red and blue lights for the fear that they can be misconstrued as a police/emergency vehicle and create confusion.

The cops obviously know you are not trying to impersonate a LEO with a blue Uber sign but regardless - if they pull you over for something else, like speeding - don't be surprised if you get a ticket for the light.

For the thread at large: Here's one with white LED's.

Or try Ebay for Uber drivers selling their kit.