[texhax] [NTG-pdftex] \pdfximage : is there a transparency attribute or method ?

[Heiko Oberdiek]

On Tue, Jan 04, 2011 at 11:09:05PM +0000, Philip TAYLOR (Webmaster, Ret'd) wrote:

> A supplementary question, if I may ?  The PdfTeX
> reference manual as found at Tug.Org has Chapter
> Eight entitled "Graphics and color", yet the
> chapter seems not to mention colour at all and
> focuses solely on graphics.  Section 7.12 says
> "\pdfliteral [ <pdfliteral spec> ] <general text>
> Like \special in normal TEX, this command inserts
> raw pdf code into the output. This allows support
> of color and text transformation." but as far as
> I can tell, there are no examples of suitable
> parameters for affecting the colour of (e.g.)
> rendered text.  May I ask if there is a supplementary
> manual that defines how colour is to be programmed
> through PdfTeX ?

Again, it's implemented in pdftex.def, look for
\pdfcolorstack...
Color parameters are specified in the PDF specification.

Yours sincerely
  Heiko Oberdiek
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