Hey Conor,
For the color, please add this code to your custom CSS
.x-pricing-column.featured h2 {
background-color: red !important;
}
For equal height or same size boxes, please add this code in Theme Options > JS or your page’s Content JS if you only want to apply to your current page.
jQuery(document).ready(function($) {
var max = 0;
$(".x-pricing-column").each(function(index, el) {
if( $(this).height() > max ){
max = $(this).height();
}
});
$(".x-pricing-column").css('height', max);
});
You might need to remove the Featured column’s top margin to clearly see the equal height. The CSS for that is this.
.x-pricing-column.featured {
margin-top: 0;
}

Hope that helps.