Many blogs highlight the author’s comment in the comments section. You can use many plugins to get this effect(For eg., the Highlight Author Comments Plugin) – but you don’t have to. You can get the get the same effect by adding a small bit of code to your theme.

The Changes

Just open up the style.css file in your active and add this at line at the end…

.bypostauthor { background-color:#aaa !important; }

Change the #aaa to the color you want as the author comment’s background. That’s it – you’re all done.

Note: This will only work on 2.7+ version of WordPress – if you are using an older version, please read the instructions in this post.