sparespace

I do!

1) In Calendar.js file change this line:

dayPanel.setAttribute("data-key", key);

on this:

dayPanel.setAttribute("data-key", calendar[key].year + "-" + ( "0" + calendar[key].month).slice(-2) + "-" + ( "0" + calendar[key].day).slice(-2));
var currentDate = new Date();
jQuery(".dayPanelHeight").each(function() {
    var specifiedDate = jQuery(this).data('key');
    var date = new Date(specifiedDate);
    if(date.setHours(0,0,0,0) == currentDate.setHours(0,0,0,0)){
        jQuery(this).addClass('today');
    }
});

2) In your .css file add new element with name .today {} and set your own styles for current data.

Thx me!

This just other example (picture), for you can see how it looks like 🙂