The highlighting only seemed to work fitfully for me, anyway. If the browser was left open at the site, when I refreshed the page it would work (mostly), but if I closed the browser or navigated to another site it wouldn't.
That is true, it was buggy. I am trying to ask if it's possible to change color of the left side icons (the paper thing and the folder). Now when something is new it turns yellow, but here we can hardly see this yellow.