private void initCharacterFlowPane() {

        ColorUtil picker = new ColorUtil();

        for (int k = 0; k < 10; k++) {
            FlowPane content = new FlowPane();
            TitledPane tPane = new TitledPane();
            tPane.setText("Test_" + k);
            /**
             * Add content *
             */
            for (int i = 0; i < 10; i++) {
                Image image = new Image(getClass().getResourceAsStream("Mario.png"), 150, 200, true, false);
                Button button = new Button("", new ImageView(image));
                content.getChildren().add(button);
               
            }

            content.setHgap(5);
            content.setVgap(5);

            content.setStyle(picker.pickNext());
            content.prefWrapLengthProperty().bind(characterScrollPane.widthProperty());
            tPane.prefWidthProperty().bind(characterScrollPane.widthProperty());
            tPane.setContent(content);
            tPane.setExpanded(false);

            characterContentFlowPane.getChildren().add(tPane);
        }


    }