Google Translate ----------------------------------- menu colors firefox and thunderbird how can I change the background and text colors of the Menues / Sidebar? How can I change the font there? All the themes I've found do not change the menus / sidebars. Is there a theme or addon to - or possibly a hidden menu entry / configuration file? Thank you in advance for your suggestions / help. frolst -----------------------------------End Hi, 1st will need to do some reading and get prepared : *https://www.howtogeek.com/334716/how-to-customize-firefoxs-user-interface-with-userchrome.css/ *https://www.userchrome.org/what-is-userchrome-css.html Look for code here by asking and/or go to : *https://www.reddit.com/r/FirefoxCSS/ So if do the reading and prepare reply back when ready for some code provided someone knows it.

hi, thanks for your answers. I got one solve but also a new question. The colours I could edit, now how can I change the fonts inside side-box, bookmark listing - see my screenshot. Thanks for your help, frolst.