Hi, I recently updated to the new Firefox and now the top bar is transparent. I changed the theme to the light color scheme but that only made the tabs non-transparent, the remaining space is still transparent. I re-installed an older Firefox version(55.03) to check that what I was remembering was right and in fact it is. This has nothing to do with the Windows Personalization options because with the older Firefox, I could keep windows transparency on and have the top bar all one solid non-see through color.