Bug 63255 [Preferences] some pages cannot be displayed in high contrast
STEPS 1) Switch to High Contrast by selecting Window->Control Panl->Accessibility Resources 2) Start Eclipse 3) Open the preferences page 4) Select Colors and Fonts 5) Select a diffrent page 6) new page not displayed.
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferenceDialog.java
* 
	 * @return the preference mananger
	 */
	public PreferenceManager getPreferenceManager() {
		return preferenceManager;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.preference.IPreferencePageContainer#getPreferenceStore()
	 */
	public IPreferenceStore getPreferenceStore() {
		return preferenceStore;
	}
	/**
	 * Get the name of the selected item preference
	 * 
	 * @return String
	 */
	protected String getSelectedNodePreference() {
		return lastPreferenceId;
	}
	/**
	 * @param selection
	 *            the <code>ISelection</code> to examine.
	 * @return the first element, or null if empty.
	 */
	protected IPreferenceNode getSingleSelection(ISelection selection) {
		if (!selection.isEmpty())
			return (IPreferenceNode) ((IStructuredSelection) selection)