Does anybody have any tips for setting the background color behind the header image?
http://test.ctagroup.org/
Atahualpa 3.6.4
WordPress 3.0.5
Thanks!
Cway

In your particular situuation adding the following to ATO>Add HTML/CSS Inserts>CSS Inserts is one way. This would add a black background behind your iStockPhoto image.

div.header-image-container {
background-color: #000 !important;
}