Inspired by this from @Dem13n, I wanted a way to add an "Author" label to posts so I could see the ones generated by the originator in a long thread. I did consider installing this extension, but it's just as simple to do it with CSS.
Curious ?
Here's what it looks like
Want the CSS ? Of course you do - you wouldn't still be reading otherwise 🙂
article.CommentPost.Post.Post--by-start-user span.username:after {
content: "Author";
background: #F05D1D;
border-radius: 4px;
padding-left: 10px;
padding-right: 10px;
color: #fff;
margin-left: 14px;
}