protected DefaultColorInterpolationController createController() {
// Create our control point colors
final ReadOnlyColorRGBA[] colors = { ColorRGBA.WHITE, ColorRGBA.RED, ColorRGBA.GREEN, ColorRGBA.BLUE };
// Create our controller
final DefaultColorInterpolationController controller = new DefaultColorInterpolationController();
controller.setControls(colors);
controller.setActive(true);
controller.setSpeed(0.5);
return controller;
}