ckeditor component lacks theme styles

[mahotilo]

Due to <iframe> usage, text in the ckeditor component does not have theme styles. Is there a simple way or hint how to fix this?
I even can not see fontawesome icons in text :(

[mahotilo]

The only working trick I have now found for Fontawesome in components.php is

$cs_ck_styles = '/include/thirdparty/fontawesome/css/font-awesome.min.css';>
$components = array(
'ckeditor' => array(
'scripts' => array(
array( 'code' => 'CKEDITOR_BASEPATH = ' . \gp\tool\Output\Ajax::quote( \gp\tool::GetDir('/include/thirdparty/' . $ckeditor_dir . '/') ) . '; ' ),
array( 'code' => 'var CS_ckconfig = ' . \gp\tool\Editing::CKConfig(array(
'contentsCss' => $cs_ck_styles,
), 'json', $plugins) . '; '),
array( 'code' => 'var gp_add_plugins = ' . json_encode( $plugins ) . '; '),
'/include/thirdparty/' . $ckeditor_dir . '/ckeditor.js',
'/include/js/ckeditor_config.js',
),
),