This is being presented as a "drought hack," demonstrating how far one can stretch the definition of the latter word.
Amidst California's recent drought, a lot of folks' lawns are unsurprisingly dying. That's what happens when humans try to force particular breeds of nature to exist in inhospitable climates. And so concerned are a subset of Californians with appearances, and so disrespectful are they of nature, that they are now paying in the neighborhood of 25 cents per square foot to have companies spraypaint their lawns green.
To be fair to the painters, both the guy mentioned in the video and this Sacramento-based lawn painter claim their paints are non-toxic. The latter painter claims that "there are no chemicals in the paint that we use, it is and (sic) non-toxic, so it is 100% completely safe for your kids, pets and any other living thing your lawn comes into contact with and for the lawn itself."
I'd like to see more details as to the chemical composition, but none are provided.
Wouldn't a better solution be to do what the southwestern states do, and landscape with cacti and plants that can naturally cut it in the climate?