https://youtu.be/x61lDo0zJTo
Go to about 4:21. You can see some sort of reflector floodlight on the ceiling giving off orange light, and it could very well possibly be HPS. Is it possible?

They did make HPS bulbs that were reflector coated for giving plant growers a more concentrated lite. See here.
And I also seen a par38 70w HPS bulb on Colin aka sailormoon01_uk's gallery.

They did make HPS bulbs that were reflector coated for giving plant growers a more concentrated lite. See here.
And I also seen a par38 70w HPS bulb on Colin aka sailormoon01_uk's gallery.

I saw that par38 HPS. I think that maybe what is seen in the video.