@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);

/* change the colors of unread tabs */
#content tab:not([selected]) {
   font-style: italic !important; 
   background-color: grey !important;
   color: white !important; }


/* change the colors of unread tabs (hovered) */
#content tab:not([selected]):hover {
   font-style: italic !important;
   background-color: #909090 !important; 
   color: yellow !important; }