Google Search is planning to roll out the Dark Mode theme for macOS and Windows operating systems. However, the theme will be configured as per the system theme, if the user system has set the light theme then it will remain unchanged.
The tech giant has not turned the background of their system but has given a dark grey shade to it, with blue links and white text. However, the feature is still under A/B testing phase but it will soon be available with Google sending out a message for this new introduction in their list of features. Google has not yet confirmed the Dark theme addition for the mobile browser search.