#gravity { width: 100%; margin: 5px 0; border-spacing: 5px; }
  #gravity td { text-align: center; vertical-align: middle; padding: 5px 0; background-color: #d0d0d0; width: 33%; }
  #gravity a { }
    #gravity a:hover { color: #505050; background: none; }

.red .tipsy-inner { background: red; }
.red .tipsy-arrow-n { border-bottom-color: red; }
.red .tipsy-arrow-s { border-top-color: red; }
.red .tipsy-arrow-e { border-left-color: red; }
.red .tipsy-arrow-w { border-right-color: red; }