Program: 32885
Project: 32885
Buggy source:
/** 
 */
public ColorPickerDialog(final SkinEditorGame game,final Field field){
  super("String_Node_Str",game.skin);
  this.game=game;
  this.field=field;
  tableColors=new Table(game.skin);
  tableColors.left().top().pad(5);
  tableColors.defaults().pad(5);
  colors=game.skinProject.getAll(Color.class);
  updateTable();
  TextButton buttonNewColor=new TextButton("String_Node_Str",game.skin);
  buttonNewColor.addListener(new ChangeListener(){
    @Override public void changed(    ChangeEvent event,    Actor actor){
      java.awt.Color color=JColorChooser.showDialog(null,"String_Node_Str",java.awt.Color.WHITE);
      if (color != null) {
        String colorName=JOptionPane.showInputDialog("String_Node_Str");
        if ((colorName != null) && (colorName.isEmpty() == false)) {
          if (colors.containsKey(colorName) == true) {
            game.showNotice("String_Node_Str","String_Node_Str",game.screenMain.stage);
          }
 else {
            float[] components=color.getComponents(null);
            Color newColor=new Color(components[0],components[1],components[2],components[3]);
            if (isColorInUse(newColor)) {
              game.showNotice("String_Node_Str","String_Node_Str" + newColor.toString() + "String_Node_Str",game.screenMain.stage);
              return;
            }
            colors.put(colorName,newColor);
            game.screenMain.saveToSkin();
            updateTable();
          }
        }
      }
    }
  }
);
  TextButton buttonNoColor=new TextButton("String_Node_Str",game.skin);
  buttonNoColor.addListener(new ChangeListener(){
    @Override public void changed(    ChangeEvent event,    Actor actor){
      try {
        field.set(game.screenMain.paneOptions.currentStyle,null);
      }
 catch (      Exception e) {
        e.printStackTrace();
      }
      game.screenMain.saveToSkin();
      hide();
      game.screenMain.panePreview.refresh();
      game.screenMain.paneOptions.updateSelectedTableFields();
    }
  }
);
  ScrollPane scrollPane=new ScrollPane(tableColors,game.skin);
  scrollPane.setFlickScroll(false);
  scrollPane.setFadeScrollBars(false);
  scrollPane.setScrollbarsOnTop(true);
  getContentTable().add(scrollPane).width(640).height(320).pad(20);
  getButtonTable().add(buttonNewColor);
  getButtonTable().add(buttonNoColor);
  getButtonTable().padBottom(15);
  button("String_Node_Str",false);
  key(com.badlogic.gdx.Input.Keys.ESCAPE,false);
}

Fixed version (ground truth):
/** 
 */
public ColorPickerDialog(final SkinEditorGame game,final Field field){
  super("String_Node_Str",game.skin);
  this.game=game;
  this.field=field;
  tableColors=new Table(game.skin);
  tableColors.left().top().pad(5);
  tableColors.defaults().pad(5);
  colors=game.skinProject.getAll(Color.class);
  updateTable();
  TextButton buttonNewColor=new TextButton("String_Node_Str",game.skin);
  buttonNewColor.addListener(new ChangeListener(){
    @Override public void changed(    ChangeEvent event,    Actor actor){
      Frame frame=new Frame();
      frame.setUndecorated(true);
      frame.setOpacity(0);
      frame.setLocationRelativeTo(null);
      frame.setVisible(true);
      frame.toFront();
      frame.setVisible(false);
      frame.dispose();
      java.awt.Color color=JColorChooser.showDialog(null,"String_Node_Str",java.awt.Color.WHITE);
      if (color != null) {
        String colorName=JOptionPane.showInputDialog("String_Node_Str");
        if ((colorName != null) && (colorName.isEmpty() == false)) {
          if (colors.containsKey(colorName) == true) {
            game.showNotice("String_Node_Str","String_Node_Str",game.screenMain.stage);
          }
 else {
            float[] components=color.getComponents(null);
            Color newColor=new Color(components[0],components[1],components[2],components[3]);
            if (isColorInUse(newColor)) {
              game.showNotice("String_Node_Str","String_Node_Str" + newColor.toString() + "String_Node_Str",game.screenMain.stage);
              return;
            }
            colors.put(colorName,newColor);
            game.screenMain.saveToSkin();
            updateTable();
          }
        }
      }
    }
  }
);
  TextButton buttonNoColor=new TextButton("String_Node_Str",game.skin);
  buttonNoColor.addListener(new ChangeListener(){
    @Override public void changed(    ChangeEvent event,    Actor actor){
      try {
        field.set(game.screenMain.paneOptions.currentStyle,null);
      }
 catch (      Exception e) {
        e.printStackTrace();
      }
      game.screenMain.saveToSkin();
      hide();
      game.screenMain.panePreview.refresh();
      game.screenMain.paneOptions.updateSelectedTableFields();
    }
  }
);
  ScrollPane scrollPane=new ScrollPane(tableColors,game.skin);
  scrollPane.setFlickScroll(false);
  scrollPane.setFadeScrollBars(false);
  scrollPane.setScrollbarsOnTop(true);
  getContentTable().add(scrollPane).width(640).height(320).pad(20);
  getButtonTable().add(buttonNewColor);
  getButtonTable().add(buttonNoColor);
  getButtonTable().padBottom(15);
  button("String_Node_Str",false);
  key(com.badlogic.gdx.Input.Keys.ESCAPE,false);
}