$("#project").autocomplete({
        minLength: 0,
        source: function (request, response) {
            //In success of ajax call i fill request(projects)
            response(projects);
        },
        open: function (event, ui) {
            var len = $('.ui-autocomplete > li').length;
            //I can access projects here but i need filtered data list coming from server which is passed to response callback
            $('.ui-autocomplete > li').css("background-color", "yellow");

            for (var i = 0; i < len; i++) {
                // Here i use indexof('+') on each list item's label text and apply css but how to get the list here ??
            }

            $('#count').html('Founded ' + len + ' results');
        }
    });