Shape3D.setMaterial(material) seems to be required to get the color to update

If this line isn't called inside the handle method:
    pointLight2Geo.setMaterial(pointLight2Material); // <-- this is required for color to update
then the color doesn't update.

        final private Sphere pointLight2Geo = new Sphere(0.1);
...
        final PhongMaterial pointLight2Material = new PhongMaterial();
        pointLight2Material.setDiffuseColor(Color.LIGHTGREY);
        pointLight2Geo.setMaterial(pointLight2Material);
...
        final ColorPicker light2ColorPicker = new ColorPicker(pointLight2.getColor());
        light2ColorPicker.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent t) {
                Color c = light2ColorPicker.getValue();
                pointLight2.setColor(c);
                pointLight2Material.setDiffuseColor(c);
                pointLight2Geo.setMaterial(pointLight2Material); // <-- this is required for color to update
            }
        });