Bug 81292 [Preferences] Message area should be disabled when empty
200412152000 My GTK theme has a textured background by default. There is a section of the preference dialog next to the Default/Apply buttons that does not respect this. I suspect there is an empty label/text widget that has had its background colour set manually. Screencap forthcoming
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferencePage.java
/**
		 * Set the layoutData for the messageArea. In most cases this will be a copy
		 * of the layoutData used in setTitleLayoutData.
		 * 
		 * @param layoutData
		 *            the layoutData for the message area composite.
		 */
		public void setMessageLayoutData(Object layoutData) {
			messageComposite.setLayoutData(layoutData);
		}
		/**
		 * Show the new message in the message text and update the image. Base the
		 * background color on whether or not there are errors.
		 * 
		 * @param newMessage
		 *            The new value for the message
		 * @param newType
		 *            One of the IMessageProvider constants. If newType is
		 *            IMessageProvider.NONE show the title.
		 * @see IMessageProvider
		 */
		public void updateText(String newMessage, int newType) {
			Image newImage = null;
			boolean showingError = false;
			switch (newType) {
			case IMessageProvider.NONE:
				hideRegion();
				return;
			case IMessageProvider.INFORMATION:
				newImage = JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_INFO);