front end - Saving a notebook as PDF, preserving syntax highlighting

Currently, one may save notebooks as PDFs from the menu by Save As... and then selecting PDF (on a Mac, I imagine it is similar on other OSs). However, the resulting PDF does not have preserve the syntax highlighting of the code, even though things like plots are coloured. Printing to a PDF has the same effect (again, all this on a Mac).

Is there some way to save a notebook to PDF format so that syntax highlighting is preserved?

Here's an example of what I mean:

PDF:

enter image description here

on-screen (mathematica notebook, screenshot):

enter image description here

I feel that I am missing something obvious, but what?

Answer

The default style sheets set ShowSyntaxStyles -> False for the "Printout" environment.

You could change the notebook to use a style sheet that doesn't set this. Probably the easiest way is to copy the definition from Default.nb, and modify it:

Cell[StyleData[All, "Printout"],
 ShowSyntaxStyles->True]

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