Well the blue mercury vapor lights are being phased out. LED street lights offer a lot of versatility and the ability to control where the light shines...and they now cost out better than other lights. The city skylines should be getting a bit dimmer as fixtures are replaced.
I'd welcome the change. The orange sodium vapor lights do cast a major glow, it's even sort of eerie during fog or when there's low cloud cover, the whole sky glows like there's a major fire somewhere close. Some of the outer suburbs nearby have "night skies" ordinances requiring that street lights, security lighting, etc. be shielded to cast light downward. While I'm a little suspicious of the expense and the intrusion, I do agree with the sentiment. We've gone overboard with lighting at night in general. Put the light where it's needed and not where it's not.