Note: After saving, you have to bypass your browser's cache to see the changes. Google Chrome, Firefox, Microsoft Edge and Safari: Hold down the ⇧ Shift key and click the Reload toolbar button. For details and instructions about other browsers, see Wikipedia:Bypass your cache.
a[data-fg_dupe_links_count]:not([data-fg_dupe_links_count="1"]).fg-dupe-links-first {
	background-color: #88de88;
}

a[data-fg_dupe_links_count]:not([data-fg_dupe_links_count="1"]).fg-dupe-links-first::after {
    content: "\0000a0[" attr( data-fg_dupe_links_count ) " duplicates]";
    color: #007000;
}

a.fg-dupe-links-dupe {
	background-color: #ffc9af;
}

a.fg-dupe-links-dupe::after {
    content: "\0000a0[duplicate " attr( data-fg_dupe_links_count ) "]";
    color: #cb0000;
}