#tray {
  padding: 0 10px;
}

#tray > .passive {
  -gtk-icon-effect: dim;
}

#tray > .needs-attention {
  -gtk-icon-effect: highlight;
  background-color: #eb4d4b;
}

#tray button {
  border-radius: 0px;
  box-shadow: inset 0 -3px transparent;
}

#tray button:hover {
  box-shadow: inset 0 -3px #5e81ac;
}