Blue lights are banned on cars in lots of places (so that you don't look like a cop car). I'm assuming SAE has thought of this already? It doesn't look too similar to the bright blue lights on cop cars, but still.
It's a light, slightly green shade of blue (turquoise), which looks very different than the deep dark blue of emergency lights.
Quite a lot of headlights already have a blue tint to them and I don't think there's really any confusion regarding those. The fact that the lights don't flash are already quite different to emergency lights.