https://techcrunch.com/2017/10/17/lets-talk-about-that-pixel-2-contrast-color-button-though/

The Google Pixel 2 and Pixel 2 XL have one of the best features introduced on a smartphone in recent memory: That button.

Admittedly, it’s just a superficial design decision, but it’s actually one of the most interesting, and most bold design decisions make in smartphones by a major consumer hardware company in a long time. Maybe that’s a depressing commentary on the state of the industry at large, but more optimistically, it’s a credit to Google and their willingness to experiment.