Confirming bug in "Simple" them
I just came across an issue with the 'Simple' theme and thought I'd share what I found. If you apply this theme on an SSL site, you will get a 'mixed content' alert when you hover over the global navigation tabs. It appears that the problem is in theme.css. Specifically, the .ms-topnavselected and .ms-topNavHover styles refer to images onhttp://localhost.
Kevin Koehne
I also had this problem using WSS 3. I reviewed all of the themes and only the "Simple" theme has the error referencing "http://localhost". Too bad since this was the one I based my custom theme on!
.ms-topnavselected {
color
003399;
background:url("http://localhost/topnavselected_simple.gif");
background-repeat:repeat-x;
border
olid 1px #bfbfbf;
border-bottom-width:0px;
border-left
olid 1px #fff;
background-color
d1d1d1;
}