/**
  * Get the contour label color. Use associated <code>ContourLineAttribute</code> if it exists and
  * has labelColorOverrideen set to <code>false</code>.
  */
 public Color getLabelColor() {
   if (attr_ != null && attr_.isLabelColorOverridden()) {
     return attr_.getLabelColor();
   } else {
     return labelColor_;
   }
 }