Hi guys

I know it's a possible option to highlight comments by the author differently than a regular user in the twentyten/eleven themes.

However I am using Starkers which is obviously totally stripped back in terms of styling.

When inspecting the element of Chris' comments (with the 10px orage top border) he has the div class .bypostauthor

This function doesn't seem to be available with Starkers, and after searching online for a solution, I can't seem to find one. Has anyone ever come across this?

Here is my website

Thanks in advance.