Google is testing circling-in, drawing a circle around, the favicons displayed in the mobile search results. I am not sure I like this but hey, Google is always testing.
Brodie Clark spotted this and posted this on Twitter. He said, “Google is testing a new display for favicons on mobile with a blue gradient circle for the outline. This is opposed to the standard mobile and desktop display which is currently a grey circular background.”
Here are screenshots from Brodie; click on them to enlarge them:
This is what I see:
Forum discussion at Twitter.