diff --git a/src/Gui/SoFCColorBar.cpp b/src/Gui/SoFCColorBar.cpp
index 3beb39b5c2..fa70beeb2d 100644
--- a/src/Gui/SoFCColorBar.cpp
+++ b/src/Gui/SoFCColorBar.cpp
@@ -90,8 +90,7 @@ public:
     ~SoFCColorBarProxyObject() {}
     void customEvent(QEvent *)
     {
-        if (bar->customize())
-            bar->Notify(0);
+        bar->customize(bar->getActiveBar());
         this->deleteLater();
     }
 
@@ -197,14 +196,18 @@ float SoFCColorBar::getMaxValue () const
     return this->getActiveBar()->getMaxValue();
 }
 
-bool SoFCColorBar::customize()
+void SoFCColorBar::triggerChange(SoFCColorBarBase*)
+{
+    Notify(0);
+}
+
+void SoFCColorBar::customize(SoFCColorBarBase* child)
 {
     try {
-        return this->getActiveBar()->customize();
+        return child->customize(this);
     }
     catch (const Base::ValueError& e) {
         e.ReportException();
-        return false;
     }
 }
 
diff --git a/src/Gui/SoFCColorBar.h b/src/Gui/SoFCColorBar.h
index 5d98259659..a492ba2da3 100644
--- a/src/Gui/SoFCColorBar.h
+++ b/src/Gui/SoFCColorBar.h
@@ -95,11 +95,16 @@ public:
   virtual float getMaxValue () const = 0;
   /**
    * Opens a dialog to customize the current settings of the color bar.
-   * Returns true if the settings have been changed, false otherwise.
    *
    * This method must be implemented in subclasses.
    */
-  virtual bool customize() = 0;
+  virtual void customize(SoFCColorBarBase*) = 0;
+  /**
+   * Forward a triggered change
+   */
+  virtual void triggerChange(SoFCColorBarBase* base) {
+    base->triggerChange(this);
+  }
   /** Returns the name of the color bar.
    *
    * This method must be implemented in subclasses.
@@ -173,7 +178,11 @@ public:
   /**
    * Customizes the currently active color bar.
    */
-  bool customize();
+  void customize(SoFCColorBarBase*);
+  /**
+   * Notify observers
+   */
+  void triggerChange(SoFCColorBarBase*);
   /** Returns the name of the color bar.
    */
   const char* getColorBarName() const { return "Color Bar"; }
diff --git a/src/Gui/SoFCColorGradient.cpp b/src/Gui/SoFCColorGradient.cpp
index 0c580094d5..dafdf400a1 100644
--- a/src/Gui/SoFCColorGradient.cpp
+++ b/src/Gui/SoFCColorGradient.cpp
@@ -294,7 +294,7 @@ bool SoFCColorGradient::isVisible (float fVal) const
     return true;
 }
 
-bool SoFCColorGradient::customize()
+void SoFCColorGradient::customize(SoFCColorBarBase* parentNode)
 {
     QWidget* parent = Gui::getMainWindow()->activeWindow();
     Gui::Dialog::DlgSettingsColorGradientImp dlg(parent);
@@ -326,8 +326,6 @@ bool SoFCColorGradient::customize()
         setRange(fMin, fMax, dec);
         rebuildGradient();
 
-        return true;
+        triggerChange(parentNode);
     }
-
-    return false;
 }
diff --git a/src/Gui/SoFCColorGradient.h b/src/Gui/SoFCColorGradient.h
index df1d273440..4163876858 100644
--- a/src/Gui/SoFCColorGradient.h
+++ b/src/Gui/SoFCColorGradient.h
@@ -68,9 +68,8 @@ public:
   float getMaxValue () const { return _cColGrad.getMaxValue(); }
   /**
    * Opens a dialog to customize the current settings of the color gradient bar.
-   * Returns true if the settings have been changed, false otherwise.
    */
-  bool customize();
+  void customize(SoFCColorBarBase*);
   /** Returns the name of the color bar. */
   const char* getColorBarName() const { return "Color Gradient"; }
 
diff --git a/src/Gui/SoFCColorLegend.h b/src/Gui/SoFCColorLegend.h
index 8c17bcba0e..17d1142330 100644
--- a/src/Gui/SoFCColorLegend.h
+++ b/src/Gui/SoFCColorLegend.h
@@ -65,7 +65,7 @@ public:
   float getMaxValue () const { return _currentLegend.getMaxValue(); }
   std::size_t countColors () const { return _currentLegend.hasNumberOfFields(); }
 
-  bool customize() { return false; }
+  void customize(SoFCColorBarBase*) { }
   const char* getColorBarName() const { return "Color Legend"; }
 
 //  virtual void handleEvent(SoHandleEventAction * action);