Hi Thangaraj,

Thank you for reviewing.

> One thing missing is a way to enable dark mode. Google search does this automatically in regular windows, but not here.
This seems that it is the specific behavior of Google. The theme of Google Search depends on User-Agent also, so it can be an unintentional mode when the User-Agent is not set to default.
If you have an additional question or feedback, please tell me or create new issue in GitHub.