Here is what I think is happening, no expert here. Your History file on the computer is set to delete viewed pages to, let say 7 days, then all pages viewed less than 7 days will be yellow when read and all pages that are older than 7 days will be blue because your browser has deleted the view pages greater than 7 days.
Go to Tools on the Tool Bar, select Internet Options and view History …… Days to keep pages in history….. select what you want.
Mine works perfect, each new post shows up in Yellow then as open them they change to Blue, they stay on until they get pushed to the bottom of the page and one by one they go away as new post come on. I never go beyond the first page unless I do a search, which works the b---s when used..
HOWEVER, if I loose my internet connection, when I get it back up and running, all post appear in Yellow as new post.
