message: fixed button colors
diff: .btn.danger {
  color: #FFF;
  - background-color: #f1444c;
  + background-color: #ff6b6b;
  }
  .btn.danger:hover {
  - background-color: #e82730;
  + background-color: #e2373f;
  }
  .btn.danger:active {
  - background-color: #f92f38;
  - box-shadow: inset -1px 1px 1px 0 #8e2034;
  + background-color: #f3535a;
  + box-shadow: inset -1px 1px 1px 0 #a72d43;
  }
  