<< " today the entire site (this is the first page that had the normal BG color) has a black background, and in order to read anything I have to highlight the text." I saw an incident of that day before yesterday. I also had to highlight the text to be able to read it. But it was just the one page for me (front page) and just the one time. I didn't try to continue a session at that point, just came back later. And later, all was (and has been) well. :)