I'am happy to see the new theme coming to serverfault with the ability to watch tag.
One feature that was lacking the old theme was the accepted answer's box from the list view. It was not like on other SE site (it's a filled green box on other sites like on your printscreen) (you can see a feedback there for the previous theme change; https://meta.serverfault.com/a/8027/256639)
So I'am happy to see a theme more easy to read with those green box, like all other SE's site.