final MySpinBoxField spinBoxFieldBlue = new MySpinBoxField(choices);
spinBoxFieldBlue.setListener(colorBox);
_adjustmentBlue = spinBoxFieldBlue.getAdjustment();
final SpinBoxFieldManager spinBoxManager = new SpinBoxFieldManager();
spinBoxManager.add(spinBoxFieldRed);
spinBoxManager.add(spinBoxFieldGreen);
spinBoxManager.add(spinBoxFieldBlue);
spinBoxManager.setVisibleRows(3);
spinBoxManager.setRowHeight(ROW_HEIGHT);
final VerticalFieldManager vfm =
new VerticalFieldManager(Field.FIELD_HCENTER);
vfm.setBackground(BackgroundFactory.createSolidBackground(Color.BLACK));
vfm.add(spinBoxManager);