Hi
That module have class suffix is “_hilite”
you can see those lines in template.css
/*hilite*/
div.module_hilite h3 {
color: #FFFFFF;
background: url(../images/h3-hilite-bg.gif) repeat-x bottom;
border: none;
}
div.module_hilite {
background: url(../images/box-hilite-br.gif) no-repeat bottom right;
color: #FFFFFF;
}
div.module_hilite div {
padding: 0;
background: url(../images/box-hilite-bl.gif) no-repeat bottom left;
}
div.module_hilite div div {
background: url(../images/box-hilite-tr.gif) no-repeat top right;
}
div.module_hilite div div div {
background: url(../images/box-hilite-tl.gif) no-repeat top left;
}