Hi, possibly but it would be a lot of hassle and to learn usserChrome : a Extension : https://addons.mozilla.org/en-US/firefox/addon/theme-font-size-changer/ Will also have to look for updated code as some of these no longer work in 60+ *https://www.howtogeek.com/334716/how-to-customize-firefoxs-user-interface-with-userchrome.css/ *http://techdows.com/2017/09/classic-theme-restorer-userchrome-css-modify-firefox-57-photon-ui.html *https://github.com/Aris-t2/CustomCSSforFx/issues/1 *https://www.userchrome.org/ *https://www.accessfirefox.org/Firefox_Accessibility_Themes.php *https://www.userchrome.org/what-is-userchrome-css.html *http://kb.mozillazine.org/UserChrome.css *https://github.com/axydavid/FirefoxUI/blob/master/README.md *https://github.com/wilfredwee/photon-australis *https://www.reddit.com/r/FirefoxCSS/ *https://www.reddit.com/r/FirefoxCSS/comments/6xyyy5/request_tabs_on_the_bottom_of_the_entire_firefox/ Note not all code in one place. Please let us know if this solved your issue or if need further assistance.

Thank you. So no easy way.... Hmmm. Guess I have to live with it at the moment.

Maybe apply some CSS rules to the download button. This CSS file gives information about selectors that you can use for the various states. *https://dxr.mozilla.org/mozilla-release/source/browser/themes/shared/downloads/indicator.inc.css Note that you need to add the <b>!important</b> to override existing rules. * <selector> {background-color: red !important;} See also: *https://www.userchrome.org/how-create-userchrome-css.html *https://www.userchrome.org/what-is-userchrome-css.html