BootStrap 3 改變 navbar 選項的字型顏色

.navbar .nav > li > a {
  float: none;
  line-height: 19px;
  padding: 9px 10px 11px;
  text-decoration: none;
  text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.25);
  color:  #ddd;
}