.ajs-dialog
{
  background-color: #333 !important;
}
.ajs-header {
  color: #aaa !important;
  background-color: #333 !important;
  border-color: #333 !important;
}
.ajs-body {
  color: #ccc !important;
}
.ajs-footer {
  background-color: #333 !important;
  border-color: #333 !important;
}