[NTG-context] multitone color problem

[Peter Rolf]

Am 07.05.2012 10:05, schrieb Hans Hagen:
> On 24-4-2012 18:03, Peter Rolf wrote:
>> Hi,
>>
>> just playing around with spot colors and run into this problem.
>> tested with 23.04.2012 and ??.11.2011, same result. the color definition
>> leads to an invalid pdf.
>>
>>
>> % multitone.tex----
>> \nopdfcompression
>> \setuppagenumber[state=stop]
>> \definemultitonecolor[combicolor] [blue=.12,yellow=.28]
>> [c=.1,m=.1,y=.3,k=.1]
>>
>> \starttext
>> \null
>> \stoptext
>> %------------------
>>
>> I also attached the original example (spot.tex).
> 
> You need to define the colorants as spot color first. It happens that
> yellow is an official built in colorant but blue isn't.
> 
> \nopdfcompression
> 
> \definecolor         [xcyan]   [c=1]
> \definecolor         [xmagenta][m=1]
> \definecolor         [xyellow] [y=1]
> 
> \definespotcolor     [scyan]   [xcyan]   [p=1]
> \definespotcolor     [smagenta][xmagenta][p=1]
> \definespotcolor     [syellow] [xyellow] [p=1]
> 
> \definemultitonecolor[scombi]
> [xcyan=.2,xmagenta=.4,xyellow=.6][c=.2,m=.4,y=.6]
> 
> \startTEXpage
>     \hbox \bgroup
>         \blackrule[color=scyan,   width=1cm,height=1cm,depth=0cm]%
>         \blackrule[color=smagenta,width=1cm,height=1cm,depth=0cm]%
>         \blackrule[color=syellow, width=1cm,height=1cm,depth=0cm]%
>         \blackrule[color=scombi,  width=1cm,height=1cm,depth=0cm]%
>     \egroup
> \stopTEXpage
> 
> 

OK. I simply used the multitone example (spot.tex) from the Wiki.

http://wiki.contextgarden.net/Colors#Multitones

I have updated the outdated example (12/2004), but I can't tell much
about spot or multitone colors (never used them).

@all: feel free to add some sentences


Peter