Thanks for your help. I was pretty sure the CSS would be the easier feature of the two. I was poking around the plugin code (not editing, just looking at how it worked) and saw that the queries are written in such a way that they can only fetch stocks by name, so I anticipated that it would be difficult but was hoping I was missing something.
Thanks for pointers on working around the CSS, though. ?? I will probably end up doing either that or adding some CSS to the theme (although I was trying to avoid adding plugin-specific CSS to the theme, so we’ll see).