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

window,
page,
dialog,
wizard,
prefwindow {
  -moz-appearance: window !important;
  background-color: -moz-Dialog !important;
  color: -moz-DialogText !important;
  font: message-box !important;
}
window:not([windowtype="navigator:browser"]) splitter,
caption,
textbox[disabled="true"],
textbox[readonly="true"] {
  background-color: -moz-Dialog !important;
}