3 ms·
As others mentions this is the Christmas theme. Another theme change you might notice from time to time is a black bar at the top of the page, which is display
by wodenokoto 7y ago
As others mentions this is the Christmas theme.
Another theme change you might notice from time to time is a black bar at the top of the page, which is displayed when mourning for a recently deceased person of particular IT or hard science prominence.