Bug 93175 [Preferences] PreferencePage.createControl is tagged as experimental
build I20050426 PreferencePage.createControl in JFace still states: * <strong>NOTE:</strong> This API is experimental * and subject to change before the 3.1 release. Should remove this for M7.
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferencePage.java
* 
		 * @param color
		 *            The color to be use in the message area.
		 */
		private void setMessageColors(Color color) {
			messageText.setBackground(color);
			messageComposite.setBackground(color);
			messageImageLabel.setBackground(color);
		}
		/**
		 * Clear the error message. Restore the previously displayed message if
		 * there is one, if not restore the title label.
		 *  
		 */
		public void clearErrorMessage() {
			updateText(lastMessageText, lastMessageType);
		}
	}
    /**
     * Preference store, or <code>null</code>.
     */
    private IPreferenceStore preferenceStore;
    /**
     * Valid state for this page; <code>true</code> by default.
     *
     * @see #isValid
     */
    private boolean isValid = true;
    /**
     * Body of page.