The test appears to have limited rollout at the moment.
Earlier, in December Google was spotted testing the feature.
The users who received the feature were able to change the background of Google.
There are reports that once the user turns on the feature, the multi-colored Google logo will turn white.
The microphone will be seen as it is.
A report stated,
The white background switches to a dark gray hue that matches first-party mobile apps.
The usually colorful icons representing the different filters (All, Images, News, etc.)
are just blue, with the tab accent color similar.
