drawablePanel.setOpaque(false);
drawablePanel.setBackground(Color.green);
swingGuiContext = new PreviewGuiContext();
final JPanel reportPaneHolder = new JPanel(new CenterLayout());
reportPaneHolder.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
reportPaneHolder.add(drawablePanel);
final JScrollPane s1 = new JScrollPane(reportPaneHolder);
s1.getVerticalScrollBar().setUnitIncrement(20);