Grays have been a significant trend for years now, in everything from houses to furnishings to cars.

In my city in the Southeastern US (and others from what I see on social media), the dominant colors for high end house remodels are dark gray or stark white. So it's not infrequent to see a charcoal gray house with a couple of putty gray cars parked out front.

From the standpoint of reducing solar heat gain and fuel/utility usage, it's a terrible trend.