Format List Calendar View Days

Question

We'd like to format the calendar view of a list not off the data entered for each of the days, but off the actual day of the week.
For example:
Saturday and Sunday boxes would be red
Monday boxes would be blue
Tuesday-Thursday boxes would be yellow
Friday boxes would be green
I'm trying this to at least get the first column/Sunday color coded, but nothing is happening:
<script type="text/javascript" src="/sites/ProjectSite/SiteAssets/jquery-latest.min.js">
<script type="text/javascript">
$(function() {
var $t;
var interval = setInterval(function() {
$t = $("table.ms-acal-month>tbody tr td:nth-child(1)");
$t.each(function(){
$(this).style("background-color", "red");
}, 1000);
</script>
Any ideas on how to even start with this?

Answer 1

I had to add the 'ms-acal-summary-itemrow' class to the tr element as shown below:
$sun = $("table.ms-acal-month>tbody tr.ms-acal-summary-itemrow td:nth-child(1)");
$mon = $("table.ms-acal-month>tbody tr.ms-acal-summary-itemrow td:nth-child(2)");
$fri = $("table.ms-acal-month>tbody tr.ms-acal-summary-itemrow td:nth-child(6)");
$sat = $("table.ms-acal-month>tbody tr.ms-acal-summary-itemrow td:nth-child(7)");