Okay, I changed the templates in a few places.

Instead of the row of underscores separating the post body from the signature, there's now a ruled line (which is/can be styled in the CSS). (These were in post_top.tpl, post_side.tpl, and post_comments.tpl inside <div class="signature">.)

The main page no longer styles the name and date underneath the most recent post as "small". (These were in gallerylist.tpl, postlist.tpl, and cfrm.tpl - the span containing the term "lastposter" used to be class="small".)