[dartho]

I think you'll have to edit the CSS file and add a body section at the top to define font and background colours... untested.

eg.

body
{
	background: #000000;
	color: #ffffff;
	font: 10pt verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif;
	margin: 0px;
	padding: 0px;
}