Consider, the PDF is generated using
dvi file, so that the resulting PDF contains the spotcolor.
I know that using
pdflatex this is possible. Is this possible using
dvips driver too?
Been many years since I did spot colours in TeX/PostScript but here's what I remember. The PostScript Language Reference Manual (3rd edition) discusses color spaces and one simple example is given on page 245 under "Separation Color Spaces". This simple example creates some text in spot color called
Download the PLRM as a PDF and check the details for yourself.I checked the resulting PDF (made with