[Lynne]

#usercp_nav .blockrow * a:hover {    background-color: #FFEB90;
etc....

Do a Search in Templates for that and you get:

#usercp_nav .blockrow * a:hover {
    background-color:{vb:stylevar imodhilite_backgroundColor};
    color:{vb:stylevar linkhover_color};
    text-decoration:none;
}

There are articles in the article section on how to use something like firebug to find this information.