I know I've found it before (6 months ago), because the text is the correct color, but I wanted to tweak the background and I realized that that one text element is not among the MCBreadcrumbsLink variants. Perhaps it inherited text color from the MadCap | breadcrumbsProxy, but it didn't inherit the background color... which I noticed only when I made my browser window really narrow, causing the entire breadcrumbs to wrap repeatedly and spill below the proxy's background color block, and onto the white background of the topic/page. Suddenly, there it was, naked! The other elements that had overflowed onto the page brought their own background color with them, but not so the terminal/current topic name.
Not a big deal; almost nobody will ever notice. But I noticed, so....
What IS that little devil called?
-k