Reverse white and black colors in a PDF

Question

Given a black and white PDF, how do I reverse the colors such that background is black and everything else is white?

Adobe Reader does it (Preferences -> Accessibili

Answer 1

Best method would be to use "pdf2ps - Ghostscript PDF to PostScript translator", which convert the PDF to PS file.

Once PS file is created, open it with any text editor & add {1 exch sub} settransfer before first line.

Now "re-convert" the PS file back to PDF with same software used above.