You can change the theme to fix this problem, I suggest you a light theme ''For example:'' https://addons.mozilla.org/en-us/firefox/addon/macintosh-white/?src=ss

You can look at the Classic Theme Restorer extension. *Classic Theme Restorer: https://addons.mozilla.org/firefox/addon/classicthemerestorer/ *You can check out the Custom color settings of the CTR extension via its Options/Preferences button on the "Firefox/Tools > Add-ons > Extensions" page. *You can find extra toolbar buttons and more toolbar settings in Customize (3-bar Firefox menu button > Customize) ---- See also: *https://support.mozilla.org/kb/how-to-make-new-firefox-look-like-old-firefox *https://support.mozilla.org/kb/common-questions-after-updating-to-new-firefox *https://support.mozilla.org/kb/learn-more-about-the-design-of-new-firefox

Thanks guys so much!