Yesterday, when opening a tab in a new window the top banner part, File Edit etc changed from being in colour to being a grey on white background. From then on all subsequent new window openings have been in this grey/white format. I have not been able to figure out why this happened nor find a way to revert back to the coloured format. They grey/white is not easy to read and unpleasant to look at. Should i save my bookmarks and re-install?