The yellow/orange lights could very well be high-pressure sodium (HPS) lighting, the same type used in street lights prior to LEDs. Like the street lights, LED lights seems to have less wash and reflection back into the night sky than HPS, and use less power than HPS for the same growth effect on the plant.

The industry is still transitioning to LED lighting due to cost and because some plants don't respond very well to LED light, so more development is required.

I remember when HPS became a big thing in greenhouses and people would call the fire department at night thinking the glow meant a nearby fire.