In Solaris Headless Testsuite fails throwing NPE when different methods related to getThumbSize() is called.

**** BEGIN: javax.swing.JColorChooser
     BEGIN: javax.swing.JColorChooser: do_getAccessibleContext_0
  !! FAIL: javax.swing.JColorChooser: do_getAccessibleContext_0 status=fail with exception=java.lang.NullPointerException
java.lang.NullPointerException
        at javax.swing.plaf.metal.MetalSliderUI.getThumbSize(MetalSliderUI.java:243)
        at javax.swing.plaf.basic.BasicSliderUI.calculateThumbSize(BasicSliderUI.java:361)
        at javax.swing.plaf.basic.BasicSliderUI.calculateGeometry(BasicSliderUI.java:345)
        at javax.swing.plaf.basic.BasicSliderUI.installUI(BasicSliderUI.java:135)
        at javax.swing.plaf.metal.MetalSliderUI.installUI(MetalSliderUI.java:78)
        at javax.swing.JComponent.setUI(JComponent.java:405)
        at javax.swing.JSlider.setUI(JSlider.java:241)
        at javax.swing.JSlider.updateUI(JSlider.java:252)
        at javax.swing.JSlider.<init>(JSlider.java:202)
        at javax.swing.colorchooser.DefaultHSBChooserPanel.buildSliderPalettePanel(DefaultHSBChooserPanel.java:462)
        at javax.swing.colorchooser.DefaultHSBChooserPanel.buildChooser(DefaultHSBChooserPanel.java:260)
        at javax.swing.colorchooser.AbstractColorChooserPanel.installChooserPanel(AbstractColorChooserPanel.java:120)
        at javax.swing.plaf.basic.BasicColorChooserUI$PropertyHandler.propertyChange(BasicColorChooserUI.java:231)
        at javax.swing.event.SwingPropertyChangeSupport.firePropertyChange(SwingPropertyChangeSupport.java:267)
        at javax.swing.event.SwingPropertyChangeSupport.firePropertyChange(SwingPropertyChangeSupport.java:235)
        at javax.swing.JComponent.firePropertyChange(JComponent.java:3739)
        at javax.swing.JColorChooser.setChooserPanels(JColorChooser.java:449)
        at javax.swing.plaf.basic.BasicColorChooserUI.installUI(BasicColorChooserUI.java:81)
        at javax.swing.JComponent.setUI(JComponent.java:405)
        at javax.swing.JColorChooser.setUI(JColorChooser.java:212)
        at javax.swing.JColorChooser.updateUI(JColorChooser.java:223)
        at javax.swing.JColorChooser.<init>(JColorChooser.java:186)
        at javax.swing.JColorChooser.<init>(JColorChooser.java:174)
        at javax.swing.JColorChooser.<init>(JColorChooser.java:165)
        at javax_swing_JColorChooser.do_getAccessibleContext_0(javax_swing_JColorChooser.java:18)
        at javax_swing_JColorChooser.run(javax_swing_JColorChooser.java:3694)
        at java.lang.Thread.run(Thread.java:579)


Testsuite available at
/net/sqesvr/export/awt/awt_ws/Headless

Attached is the failiure scenarios which throws NPE and the complete Test Report
I could reproduce the failiure in both SolSparc 8 and SolSparc 9