to edit the colors, you should edit this step,
<style type="text/css">
.newbulb { background-color : #FFA800; border: 1px solid #FFA800; }
.oldbulb { background-color : #6A89B1; border: 1px solid #6A89B1; }
</style>
change the hexcodes to work with your colorscheme
as for question 1, it's not available yet, possibly in the next version