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* CMYK and spot colour confusion
@ 2007-07-10 13:59 Oliver Buerschaper
  0 siblings, 0 replies; only message in thread
From: Oliver Buerschaper @ 2007-07-10 13:59 UTC (permalink / raw)
  To: mailing list for ConTeXt users

Hi there,

I'm trying to get to grips with all these colours in ConTeXt and  
MetaFun ... What I'd like to get is a document with CMYK and spot  
colours only, so here's my attempt:

---

\enableregime[utf]
\noheaderandfooterlines

\setupcolors[cmyk=yes,rgb=no,spot=yes,state=start]

\definecolor[PANTONE328CS]	[c=1,m=0,y=.52,k=.11]
\definecolor[PANTONE428CS]	[c=0,m=.02,y=.09,k=.14]

\definecolor[my_green]		[PANTONE328CS][p=1]
\definecolor[my_lightgreen]	[PANTONE328CS][p=.5]
\definecolor[my_grey]			[PANTONE428CS][p=1]
\definecolor[my_mediumgrey]	[PANTONE428CS][p=.8]
\definecolor[my_lightgrey]		[PANTONE428CS][p=.5]

\setuppapersize[A4][A4]

\starttext

\section{CMYK colours}

\startcolor[cyan]
\input ward
\stopcolor

\startcolor[magenta]
\input ward
\stopcolor

\startcolor[yellow]
\input ward
\stopcolor

\section{Spot colours}

\startcolor[my_green]
\input ward
\stopcolor

\startcolor[my_lightgreen]
\input ward
\stopcolor

\startcolor[my_grey]
\input ward
\stopcolor

\startcolor[my_mediumgrey]
\input ward
\stopcolor

\startcolor[my_lightgrey]
\input ward
\stopcolor

\stoptext

---

However, I encountered a few oddities. I could separate the channels  
c, m, y, k via

texexec --separation=c file.tex

etc. but on the individual channels c, m and y the black headings as  
well as all spot colours kept appearing. Shouldn't the cyan channel  
contain only cyan and nothing else?

Also, I have no clue how to separate the spot colours ... Both

texexec --separation=PANTONE328CS file.tex

and

texexec --separation=my_green file.tex

spilled out tons of error messages. What could I improve to make this  
work?

Cheerio,
Oliver
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