pjs/browser/base/content/browser.css

searchbar {
  -moz-binding: url("chrome://browser/content/search.xml#searchbar");
}

/* ::::: print preview toolbar ::::: */

toolbar[printpreview="true"] {
  -moz-binding: url("chrome://global/content/printPreviewBindings.xml#printpreviewtoolbar");
}

toolbarbutton[type="updates"] {
  -moz-binding: url("chrome://mozapps/content/update/updates.xml#updateStatusbarNotification");
}

#noPreviewAvailable 
{
  background-color: white !important;
  font-size: 12px !important;
}