.theme-green div.a {
  color: green;
  border: 1px solid;
  padding: 5px;
}
.theme-green div.b {
  color: #80ff00;
  border: 1px solid;
  padding: 5px;
  background: #b3ff66;
}

.theme-red div.a {
  color: red;
  border: 1px solid;
  padding: 5px;
}
.theme-red div.b {
  color: #bf0000;
  border: 1px solid;
  padding: 5px;
  background: #ff2626;
}