Google is testing shading and adding color and depth to favicons that they display in the search result snippets. This was spotted some time ago but it seems to be more broadly being tested now, including the shading experiment.
Here is a screenshot from Chandan Kumar from a few days ago on X – notice the three variations of the favicon:
Here are more examples from Glenn Gabe:
Check out LinkedIn’s favicon in the test. The first screenshot is current and the second is the test. Interesting… pic.twitter.com/7ZFoHOUOd2
— Glenn Gabe (@glenngabe) November 20, 2023
And more:
Google is adding a nice little background to 301 URLs in search results.
Did anyone notice?@rustybrick #SEO pic.twitter.com/PDIrEOkd0w