Re: Renaming spot colours

[h h extern <pragma@wxs.nl>]

Duncan Hothersall wrote:
> Peter Rolf said
> 
>> \definecolor[PANTONE 294CV] [c=1,m=.56,y=0,k=.18]
>>
>> % test \framed[background=color, backgroundcolor={PANTONE
>> 294CV}]{Test}
>>
>> \color[PANTONE 294CV] Test
>>
>> % the only thing that doesn't work is \PANTONE 294CV
> 
> 
> Thanks very much for responding Peter! Interesting behaviour - the above 
> will process in ConTeXt, but to match the Corel name I need a space 
> after the '294' as well, which results in:
> 
> -- 
> [MP to PDF] (./ifs-fmar-bk-mpgraph.1 [unknown MP special 294]
> ! Missing number, treated as zero.
> <to be read again>
>                    C
> \@@cl@@r ->C
>             V
> etc.
> -- 
> 
> But in any case - did you get a functioning PDF file when you used the 
> above definition? Despite the fact that ConTeXt completes its run, I get 
> a broken file with your definition. Maybe this is because I am using 
> multiple tints of the spot? My color defs look like this:
> 
> \setupcolors[rgb=no,cmyk=no,spot=yes,state=start]
> \definecolor[PANTONE 294CV][c=1,m=.56,y=0,k=.18]
> \definecolor[IFSblue][{PANTONE 294CV}][p=1]
> \definecolor[IFSbluetint][{PANTONE 294CV}][p=.2]
> \definecolor[IFSblueheadertint][{PANTONE 294CV}][p=.12]
> \definecolor[IFSbluetabletint][{PANTONE 294CV}][p=.15]
> 
> As I say, even with this definition (missing the final space) the PDF 
> result won't open in Acrobat (colour space error). Does your open?

The problem is in the space in the name; since this name is used all over the 
place, an internal cleanup will not help, so this is why we have (yes, 
undocumented, so ... add to the wiki)

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

\definecolor[IFSbluebase]      [c=1,m=.56,y=0,k=.18]

\doregisterspotcolorname{IFSbluebase}{PANTONE 294CV}

\definecolor[IFSblue]          [IFSbluebase][p=1]
\definecolor[IFSbluetint]      [IFSbluebase][p=.2]
\definecolor[IFSblueheadertint][IFSbluebase][p=.12]
\definecolor[IFSbluetabletint] [IFSbluebase][p=.15]

\starttext
   \color[IFSbluetabletint]{Interesting}
\stoptext

So, use nice names internally and register the name using a low level feature; 
in a next version i will provide

\definecolor[IFSbluebase]      [c=1,m=.56,y=0,k=.18,e=PANTONE 294CV]

(e for equivalent) which is nicer.

[multitone colors are even nastier, but they are cleaned up automatically]

Hans

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