message: added primary colors
diff: box-shadow: inset -1px 1px 1px 0 #CACACA;
  }
  +.btn.primary {
  + color: #FFF;
  + background-color: #6fc8ea;
  +}
  +
  +.btn.primary:hover {
  + background-color: #58b7dc;
  +}
  +
  +.btn.primary:active {
  + background-color: #67c9ef;
  + box-shadow: inset -1px 1px 1px 0 #53a4c3;
  +}
  +
  .btn.danger {
  color: #FFF;
  background-color: #ff6b6b;
  