Hey Omws, 

The Jquery you are using is wrong . The correct one is :

jQuery('body .nectar-hor-list-item').attr('color', 'none');

I am afraid we dont have any such manual available . 

The relevant code can be found in "salient/nectar/tinymce/shortcode-processing.php" file . 

Furthermore please consider hiring a freelancer over at Envato Studio for these Theme customizations as they are not provided as Support: http://themeforest.net/page/item_support_policy .

Thanks