message: Updated: use value of undefined when empty string is passed.
diff: opacity: 0.5;
  }
  +.ParameterSchema__validateOpenShutButton .Icon {
  + text-shadow: 0 0 4px rgba(255,0,0,0.5);
  +}
  +
  .ParameterSchema__previewOpenShutButton--active .Icon,
  .ParameterSchema__infoOpenShutButton--active .Icon {
  color: var(--color-text-positive);
  