I’m unable to figure out how to modify the CKEditor 4 iframe’s body background color. I’ve tried multiple solution but unable to figure out how can i achieve.

(function ($, Drupal, CKEDITOR) {
CKEDITOR.plugins.add(‘cellbackgroundcolorplugin’, {
icons: ‘backgroundIcon’,
init: function (editor) {

  // Adding/Creating command.
  editor.addCommand( 'cellBackground',  {
    exec: function(editor) {
        if(style.checkActive( editor.elementPath(), editor )) {
          editor.removeStyle( style );
        }else {
          editor.applyStyle(style);
        }
    }
  });

  // Register the button, when the button plugin is enabled
  if (editor.ui.addButton) {
    editor.ui.addButton('CellBackgroungColorPlugin', {
      label: editor.config.backgroundIconLabel,
      command: 'cellBackground',
      toolbar: 'basicstyles',
      icon: editor.config.backgroundIcon
    })
  }
},

});
})(jQuery, Drupal, CKEDITOR);

Expectation is that cell background color should be dynamically changed based on selected color