I recently realized that my new theme doesn’t display author comments in a different color than regular comments, so I struck out to fix the issue.
I regard author comment highlighting as a major feature or lack thereof for any theme. It should be mandatory, as it makes it easy to scan and find the original author’s comments. It also keeps a rude commenter from posting under your name and having readers believe it is actually your comment. You could also use colored comment highlighting on a multi-author blog to note comments by writers from the site who didn’t actually write said post.
Anyways, on to the details.