Last modified: 2012-04-09 16:35:35 UTC
Created attachment 10023 [details] screen shot taken from one of the less affected pages with the background painted in blue. The background of ALL pages of the Wikipedia in English has turned 50 to 100% blue (en.wikipedia.org, but not in other Wikipedias) since 14-15 February, 2012. I attach a screen shot taken from one of the less affected pages.
I had this on my developer wiki It's some form of a Chrome bug - I signed out of my google account, deleted my chrome user, restarted chrome and signed in again Sorted it for me
*** This bug has been marked as a duplicate of bug 34551 ***