text styling:
Go to options > gallery to the entry "allowed tags". There changep => (style=>()) to p => (style=>() class=>() id=>()) to allow the atributes for css class and id.
Then go to the plugin options of the contact_form and add the class/id you want to use for styling.
No, there is currently no easy way to disable that except hacking the plugin. Since the form does only support captcha which might be not overall reliable against spam the confirmation was added for spam/security reasons. I will take a look if we can make that an option though.