Menü Anzeige (FF 55.0.3)

    Manche Erweiterungen setzen diese Icons selber rein.
    Alle anderen musst du für jeden Eintrag per css Code selber erstellen.

    Beispiel für Downloads:

    CSS
    #menu_openDownloads { 
-moz-binding: 
url("chrome://global/content/bindings/menu.xml#menu-menubar-iconic") !important; 
list-style-image: url("data:image/png;base64,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") !important;
padding-left:6px !important;}


#menu_openDownloads>.menubar-text{
padding-left:3px !important;}