[Inkscape-user] How to select invisible objects

I created a template with text frames (simple rectangles). Because there seems to be no highlighting of objects a way that the highlighting is not printed (a fix part of the object itself), I decided to configure no fill and no border for the frames and leave the ruler guides at place. However, then I was not able to select any frame anymore except via the XML-editor. Is there a more clever method?

Dennis