mmagocs on "Hide "Comments Off""

Hi-

My blog: http://eatyourcolors.wordpress.com/

I'd like to have comments be an option sometimes, but not all the time. Right now, this is my CSS code:

p.tagged {
display:none;
}

p.num_comments {
background:none;
}

And as you can see in the blog, when I have comments turned off, you see the words "Comments Off". How can I hide these words for the posts that have comments turned off but leave the "Leave a Comment" words visible for when comments are turned on for other posts?

Thanks!