(Read more interesting articles on Plone here.)
Examining themes in the Zope Management Interface
Now that we have seen in part how themes work, let us take a closer look at their representation in Zope Object Database (ZODB).
Browse to http://localhost:8080/Plone. Click on Site Setup Zope Management Interface| and you should see:
This is a Through the Web (TTW) representation of all the objects in the database at the Plone site level (the application root is one level above).
The most frequently used theme-related objects here are:
Take a look at your site with Firebug, in particular the style tab.
You should see:
When portal_css debug mode is enabled, we can see (or by viewing the HTML source) that the CSS files are loaded individually in Firebug.
This can be absolutely invaluable when trying to correlate various visual elements with their respective sources.