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

@-moz-document url-prefix("https://mail.google.com/mail/"),
               url-prefix("http://mail.google.com/mail/")
{
  td > div[style="text-align: center; font-size: 0px; color: white;"]
    {display: none !important;}

  td[valign="top"][align="right"][class="trb"] > b
    {color: #E6E6E6 !important;background-color: #E6E6E6 !important;}	/*cross out-lightgray*/ 
    /*{color: black !important;background-color: black !important;}*/	/*cross out-black*/
    /*{color: white !important;}*/	/*hide-white*/
    /*{color: #E6E6E6 !important;}*/	/*faint address*/
    /*{display: none !important;}*/	/*remove completely */
}