Google is testing adding a dynamic blue colored background highlight color when you hover your mouse cursor over a search result snippet. The whole background just behind that specific search result snippet will change from white, to a highlight blue color.
This was spotted by Deepak Yadav who posted this screenshot on X:
Gagan Ghotra also spotted this and shared this video of it on X:
I am normally not into these types of user interfaces, but I can see this being useful and beneficial to some searchers.
Although, it may be a bit busy when you scroll through the snippets.
What do you all think?
Forum discussion at X.
Update: Frank Santmann sent me an example of this on people also ask:
Update: 2025:
I am now seeing the mouse cursor overlay hover effect in the Google search results - old story at https://t.co/KmRea0U7Ux pic.twitter.com/SrY5B2pzSK
— Barry Schwartz (@rustybrick) June 23, 2025