Firefox Titelleistenfarbe unter Windows 10

Damit Firefox die gleiche Titelleistenfarbe wie die Windows Fenster von Windows animmt, erstellt Ihr in eurem Firefox Profil einen Ordner "chrome" wenn nicht vorhanden.
Darin dann eine Datei namens "userChrome.css" mit folgendem Inhalt:

/* Set the default namespace to XUL */
@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
 
/* Only make changes in the main browser window */
@-moz-document url(chrome://browser/content/browser.xul) {
        /* Allow custom window colors */
        #main-window {
                background-color: transparent !important;
        }
 
        /* Make the menu bar background color transparent so it remains the same color as the title bar */
        #main-menubar {
                background-color: transparent !important;
        }
 
        /* Make the minimize, maximize and close buttons background colors transparent so they are the same color as the title bar */
        #main-window #titlebar-buttonbox .titlebar-button {
                background-color: transparent !important;
                list-style-image: none !important;
                padding: 9px 17px 9px 16px !important; 
        }
       
        /* Darken the minimize and maximize buttons when hovering over them */
        #titlebar-buttonbox #titlebar-min:-moz-any(:hover,[open]), #titlebar-buttonbox #titlebar-max:-moz-any(:hover,[open]) {
                background-color: rgba(0, 0, 0, 0.1) !important;
                transition: background-color linear 100ms !important;
        }
       
        /* Further darken the minimize and maximize buttons when clicking on them */
        #titlebar-buttonbox #titlebar-min:-moz-any(:active,[open]), #titlebar-buttonbox #titlebar-max:-moz-any(:active,[open]) {
                background-color: rgba(0, 0, 3, 0.207) !important;
                transition: none !important;
        }
       
        /* Set the maximize and minimize button margins */
        #main-window #titlebar-buttonbox #titlebar-min.titlebar-button, #main-window #titlebar-buttonbox #titlebar-max.titlebar-button  {
                margin-right: 1px !important;
        }
       
        /* Make the close button red with a white X icon when hovering over it */
        #titlebar-buttonbox #titlebar-close:-moz-any(:hover,[open]) {
                background-color: rgba(232, 17, 35, 1.0) !important;
                list-style-image: url('data:image/svg+xml;charset=UTF-8,') !important;
            transition: background-color linear 100ms !important;
    }
   
    /* Make the close button light red with a white X icon when clicking on it */
    #titlebar-buttonbox #titlebar-close:-moz-any(:active,[open]) {
            background-color: rgba(226, 97, 107, 1.0) !important;
            list-style-image: url('data:image/svg+xml;charset=UTF-8,<svg width="12" height="12" xmlns="http://www.w3.org/2000/svg"><style>g%23close{stroke:%23fff;}</style><g id="close"><path d="M1,1 l 10,10 M1,11 l 10,-10"/></g></svg>') !important;
            transition: none !important;
    }

    /* Set the close button margin when the window is maximized */
    #main-window[sizemode="maximized"] #titlebar-buttonbox #titlebar-close.titlebar-button {
            margin-right: 2px !important;
            margin-top: -2px !important;
    }
   
    /* Remove the ugly line on top of the selected tab */
    .tabbrowser-tab[selected] {
            margin-top: -1px !important;
    }</code></pre>

Ab jetzt sollte sich der Firefox von seinen Farben den in Windows eingestellten anpassen.