Those things must be LED and very cheap on electricity, because there’s a house on the way to and from my mom’s that appears to never turn them off, just a different color for different holidays or seasons. I suppose it’s off during the day, but never at night.
Some are LED and pretty common now. The light we purchased was an actual laser light, rather pricey and could only be ordered online. The manufacturer is Bliss Lights and the affect in trees, landscape is awesome. It makes tiny pinpoints of light everywhere in the radius, one color and stationery. Not just for holidays.