Dark themes come and go these days. For example, Android, iOS and Windows now have one dark mode, while most of the new applications that are released have a dark appearance.
As can be seen, Google is also preparing a dark mode for the machine search, in an effort to bring more consistency to devices with dark theme enabled.
So, the company recently started testing the dark mode on Google Search on Android devices.
The dark feature on Google.com is only available for the browser Google Chrome and comes with an experimental flag for now. Logically after the tests, it will be released for all mobile devices.
It remains to be seen if Google.com's dark mode will reach the Desktops. Of course, it will take some time before the tests are completed, but it seems that everything will go dark sooner or later.