[metapost] CMYK colors

[Dan T. Abell]

On 24 Jun 2011, at 09:11, luigi scarso wrote:

> On Fri, Jun 24, 2011 at 4:59 PM, Steve Peter <speter at mac.com> wrote:
>> 
>> On Jun 23, 2011, at 12:43 AM, Taco Hoekwater wrote:
>> 
>>> On 06/23/11 00:34, Troy Henderson wrote:
>>>> Is there a reason that when the CMYK colorspace support was added to
>>>> MetaPost that the colors "cyan", "magenta", "yellow", and "key" (or
>>>> "black") were not added as synonyms to (1,0,0,0), (0,1,0,0),
>>>> (0,0,1,0), and (0,0,0,1), respectively?
>>> 
>>> Probably because nobody thought about it. But I do not like 'key'
>>> in any case.
>> 
>> Why? That *is* what K means. http://en.wikipedia.org/wiki/Key_plate.
> yes, we know. But "key" is really a bad name for a color.
> Maybe "key_plate", but I must admit that "black" is not bad at all.

Yes, "key" has, imho, too much overlap to be used as a stand-alone color name.
I think having "black" in the name is essential.

Stephan Hennig's colordef package defines a lot of colors for different color models---including CMYK. They include "Black" and "cmyk_black".