I am trying to make some minor tweaks to an exhibit's appearance; mostly some CSS tweaks and rudimentary layout changes (I want to change the way <blockquote> appears and change the way the Exhibit Section titles/links appear).
I've looked here which notes: "Exhibit Builder/views/shared folder includes the subfolders for designing themes." On my installation though (1.3.2) there do not seem to be subdirectories for each theme in that directory.
Where should I be looking? And, more generally, am I right in assuming the best way to make these "tweaks" is to somehow copy the current public theme as a separate theme and make my tweaks there? (The sort of tweaks I'd like may--to the Thanks Roy theme--would not be covered by simply selecting "default").
Thanks.

