According to 9to5Google, Google is developing a darker dark option for its Android search app (via Android Police). This new tint isn't the same as the one seen in Google's recent desktop test of a pitch-black dark mode. Rather, the one seen in the mobile app is a shade deeper than the standard dark gray, but not quite black.
There was a pitch-black search page for a brief while on the desktop, but it quickly changed to dark gray. The new dark option in Google's mobile app may be more appealing to users who have OLED screens and want to preserve battery life, or who simply enjoy dark mode.
The new shade is available in Google's latest 13.8 beta in the Google Play Store, which you can get via APKMirror, an archive that allows Android users to download items that aren't readily available on their device, or go the official route by joining the beta test group, according to Android Police.
After confirming that it was testing dark mode on desktops last year, Google said in February that dark mode for Google Search will be available to all desktop users. Though you can access the app's new color hue on your own, a larger rollout, similar to the desktop version we just witnessed, might take months to reach more users.