Is there any way to add class to edited posts in order to style them differently? If there is a way to do that without adding a class, this option would be much better.
EDITED - IGNORE THE ABOVE QUESTION - SEE BELOW
Is there a way to add a check box (meta box) in the area that a user writes an article/post so when this is checked a class will be added on the specific post (in loop and in single post page)? If something like this way is impossible, is there a way to get this done with a custom field? If both are possible I would prefer the first way.