All the threads are exactly the same for me in that forum. None have a different background color.
edit: Whoops, spoke too soon. I see one on page 2.
He modified the threadbit template and add this class to the <tr> if the user is a member of a certain usergroup: classified_highlight classified_bold
Then he added this CSS:
HTML Code:
.classified_bold h2 a {
font-size: 16px;
font-weight: bold;
}
.classified_highlight .alt1 {
background-color: #FFFFCC;
}
.classified_highlight .alt2 {
background-color: #FFFFCC;
}