Changing the appearance of the header

Open jquery-ui-custom.css (usually found in \SISWebMap9.0\css\cadcorp-theme).and locate the .ui-widget-header section. This section controls the appearance of the headers.

.ui-widget-header {
	border: 0px solid #0065a2;
	/* Original solid blue header, created by theme roller */
	/* background: #0065a2 url("images/ui-bg_flat_0_0065a2_40x100.png") 50% 50% repeat-x; */
       /* Transparent Header added as RGB because the default blue, defined as a Hex colour, does not support transparency. */
	background: rgba(0,101,162, 0.60);
	/* Original white text definition, created by theme roller */
	/* color: #eeeeee; */
	/* White text added as colour */
	color: white;
	font-weight: bold;

To change the colour or transparency of the header change the background property [background: rgba(0,101,162, 0.60)] to the RGBA code that will give to the colour/transparency you desire.