Green Grass in January. Painted?

 Last week Dear One and I were returning from an appointment. At the real estate office at the beginning of the complex there was a crew of men with hazmat masks and a variety of equipment.  What were they doing?  Painting the grass green.  At least that is what it looks like!

The neighbor may not be as happy about the difference in the grass...

If you know what really happened to that grass, let me know.  One of the workmen had a blower and it looked like he was blowing the grass into an upright position.

Whatever it is, it seems a little funny to me. We are not going to do that to our lawn!