KoolCalendar is very flexible in changing appearance look with styleFolder settings.
span style="color: #ff0000;">"/KoolCalendar/koolcalendar.php""cal"); //Create calendar object
$cal->scriptFolder = $KoolControlsFolder."/KoolCalendar";//Set scriptFolder
"default""style_select""style_select"//Init calendar before render
"form1" method="post">
Select style:
<select id="style_select" name="style_select" onchange="submit();">
<option value="default""default""selected""padding-top:20px;padding-bottom:40px;width:650px;<?php if ($style_select=="black") echo "#333"; ?>">
//Render calendar ?>