@namespace url(http://www.w3.org/1999/xhtml);

@-moz-document domain(mail.google.com)
{
  table.tlc tr.ur:hover, table.tlc tr.rr:hover   /* unred&read hover rec */
    {background-color: #FFC0C0 !important;}

  table.tlc tr.sr:hover                          /* selected hover rec */
    {background-color: #FFC08C !important;}  
}