Java Version: jdk1.7.0-ea-b112 SWAT build
Platform: WindowsXP pro

Problem:
When launch SwingSet2 demo with java look and feel, and Themes set by default which is Ocean, when you click ColorChooser Demo, it threw exceptions, I cannot always reproduce the exception, only reproduce two times out of 5.

The exceptions as below:

C:\jdk1.7.0>bin\java -jar demo\jfc\SwingSet2\*.jar
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
        at BezierAnimationPanel.paint(BezierAnimationPanel.java:333)
        at javax.swing.JComponent.paintChildren(JComponent.java:887)
        at javax.swing.JComponent.paint(JComponent.java:1063)
        at javax.swing.JComponent.paintChildren(JComponent.java:887)
        at javax.swing.JComponent.paint(JComponent.java:1063)
        at javax.swing.JComponent.paintChildren(JComponent.java:887)
        at javax.swing.JComponent.paint(JComponent.java:1063)
        at javax.swing.JComponent.paintChildren(JComponent.java:887)
        at javax.swing.JComponent.paint(JComponent.java:1063)
        at javax.swing.JComponent.paintToOffscreen(JComponent.java:5194)
        at javax.swing.BufferStrategyPaintManager.paint(BufferStrategyPaintManag
er.java:295)
        at javax.swing.RepaintManager.paint(RepaintManager.java:1206)
        at javax.swing.JComponent._paintImmediately(JComponent.java:5142)
        at javax.swing.JComponent.paintImmediately(JComponent.java:4952)
        at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:770)

        at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:728)

        at javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:6
77)
        at javax.swing.RepaintManager.access$700(RepaintManager.java:59)
        at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java
:1621)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:660)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThre
ad.java:211)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.
java:128)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
ad.java:117)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)

        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)

        at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

How to reproduce the problem:
1, Using b112 launch the SwingSet2 demo by:
bin\java -jar demo\jfc\SwingSet2\*.jar
2, select Java Look And Feel under Look & Feel, click each tabs, and when click ColorChooser Demo, some times, it threw exceptions.