@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);

.tabbrowser-tab[label="About Plugins"] .tab-icon-image,
#main-window[stylish-url="about:plugins"] #page-proxy-favicon {
list-style-image: url("data:image/png;base64,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") !important;
}