And that's self-reinforcing. I bought my first new-from-dealership car (a Prius Prime) a few years back and wanted to get one with a color, and learned that th

And that's self-reinforcing. I bought my first new-from-dealership car (a Prius Prime) a few years back and wanted to get one with a color, and learned that this would mean waiting months and paying more, while the grey one was on the lot right now. Because the grey is the most plentiful option, it's also now the easiest to acquire unless you're really looking to go out of your way for color.