I presume from posting that you would prefer comments were annotated to that ticket ?
Sorry, I didn’t have time to post a full reply.
You won’t be able to use AJAX with the existing optOut code because of the nonce check. I recommend waiting for the ticket to be implemented, which would then allow you to pass styles to the iframe.
In the meantime, you can modify the template (plugins/CoreAdminHome/templates/optOut.tpl).