$.getJSON("/api.php?action=query&format=json&list=allusers&augroup=threadmoderator&aulimit=max&cb=" + new Date().getTime(), function(data) {
        var users = [];
        for (var i in data.query.allusers) {
                users.push('#Rail .User[data-user="' + data.query.allusers[i].name + '"]');
        }
        if (users.length > 0) {
                mw.util.addCSS(
                        users.join(",\n") + ' {\n' +
                                 '\tcolor: #1d981d !important; \n' +
                                 '\tfont-weight: normal; \n' +
                                 '\tfont-style: itatlic; \n' +
                        '}'
                );
        }
});