The old blue streetlights weren’t as noticeable as the orange sodium vapor lights, which cast a sort of dome of orange glow over towns and cities at night. But, the orange ones apparently are more energy efficient? Some of the suburbs near me have a “night skies” ordinance requiring that exterior lighting be shielded to reflect downward to minimize the excess.
That said, the expense of doing this everywhere will be astounding, count on that.
LED are inherently directional and require optics to disperse into a flood pattern. The color spectrum is an option. The energy savings plus operational lifetime will encourage replacement.