#TabsToolbar > .toolbarbutton-1:not(#alltabs-button):not(#new-tab-button) {
  -moz-appearance: none !important;
  margin: 0 !important;
  padding: 0 !important;
  background-repeat: no-repeat !important;
  background-size: 200% !important;
  -moz-border-image: url("chrome://browser/skin/tabbrowser/tab.png") 4 5 3 6 / 4px 5px 3px 6px !important;
  -moz-border-radius: 10px 8px 0 0 !important;
}

.tabbrowser-tab:not([selected="true"]),
.tabs-newtab-button,
#TabsToolbar > .toolbarbutton-1:not(#alltabs-button):not(#new-tab-button)  {
  background-position: -5px -2px !important;
  background-image: -moz-linear-gradient(top,rgba(198,201,206,.70),
                                   rgba(151,160,172,.70)),
                    -moz-linear-gradient(bottom, rgba(0,0,0,.8) 20%, rgba(0,0,0,0) 60%) !important;
}

.tabbrowser-tab:not([selected="true"]):hover,
.tabs-newtab-button:hover,
#TabsToolbar > .toolbarbutton-1:not(#alltabs-button):not(#new-tab-button):hover {
  background-image: -moz-linear-gradient(top,rgba(198,201,206,.8),
                                   rgba(151,160,172,.8)),
                    -moz-linear-gradient(bottom, rgba(0,0,0,.8) 20%, rgba(0,0,0,0) 60%) !important;
}

.tabbrowser-tab:not([selected="true"]) {
  text-shadow: 0 1px 0 rgba(255,255,255,.3) !important;
}