YUI Calendar Rendering Current Day

Question

I'm trying to render a calendar with certain days highlighted. The code below should do this, but today isn't highlighted the same as the other days. It seems as though some default renderer is overriding my code.

    YAHOO.phitbam.calendar.init = function() {
        YAHOO.phitbam.calendar.cal1 = new YAHOO.widget.Calendar("cal1","cal1Container");
        <core:forEach var="date" items="${myDO.calendar}">
          YAHOO.phitbam.calendar.cal1.addRenderer("<fmt:formatDate value="${date}" pattern="MM/dd/yyyy"/>", YAHOO.phitbam.calendar.cal1.renderCellStyleHighlight1);
        </core:forEach>
        YAHOO.phitbam.calendar.cal1.render();
        YAHOO.phitbam.calendar.cal1.selectEvent.subscribe(handleSelect, YAHOO.phitbam.calendar.cal1, true);
    }

In this example, myDO.calendar contains Oct 3-6. Any thoughts why Oct. 4 (today) isn't highlighted?