After years of remaining ignorant, Google finally appears to shift to dark themes. It is evident now as many of its apps are getting fark mode treatment. This is further confirmed as the latest update to Google Contacts has a dark mode toggle.
Just like other Google Apps with dark themes, the background of this app is also dark grey and not black. However, it is still better than nothing. Google contact functions the same way as it used to do before besides just turning the background from white to grey.