code: public static void initiateInstance(final String title, final String styleName) {
          INSTANCE = new ColorPicker(styleName, title, null);
      }
docs: Creates an instance of {@link ColorPicker} which will be accessible through {@link #getInstance()} and
  {@link #requestInstance()} methods.
  
  @param title will become window's title.
  @param styleName determines the style of {@link ColorPicker}.