Bug 77537 [preferences] Preview window in Preferences->Java->Properties File Editor displays incorrect background color
The properties file editor seems to inherit its background color from the setting in Preferences->Java->Editor->Syntax. However, the preview window in Preferences->Java->Properties File Editor always displays a white background.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaSourceViewer.java
/*
	 * @see org.eclipse.jface.text.source.ISourceViewerExtension2#unconfigure()
	 * @since 3.0
	 */
	public void unconfigure() {
		if (fOutlinePresenter != null) {
			fOutlinePresenter.uninstall();	
			fOutlinePresenter= null;
		}
		if (fStructurePresenter != null) {
			fStructurePresenter.uninstall();
			fStructurePresenter= null;
		}
		if (fHierarchyPresenter != null) {
			fHierarchyPresenter.uninstall();
			fHierarchyPresenter= null;
		}
		if (fForegroundColor != null) {
			fForegroundColor.dispose();
			fForegroundColor= null;
		}
		if (fBackgroundColor != null) {
			fBackgroundColor.dispose();
			fBackgroundColor= null;
		}
		if (fPreferenceStore != null)
			fPreferenceStore.removePropertyChangeListener(this);
		
		super.unconfigure();