Looping over all defined colours

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From	Cecil Westerhof <Cecil@decebal.nl>
Newsgroups	comp.lang.postscript
Subject	Looping over all defined colours
Organization	Decebal Computing
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Date	Sun, 11 Nov 2012 11:34:20 +0100
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Someone on this mailing-list showed met the simple way down to declare
a lot of colours at once. I wold like to do something with all those
colours. Is there a way to iterate the colours?

/colors <<
  /colorBlack   { 0   0   0   }
  /colorBlue    { 0   0   1   }
  /colorCyan    { 0   1   1   } % aqua
  /colorFuchsia { 1   0   1   }
  /colorGray    { .5  .5  .5  }
  /colorGreen   { 0   .5  0   }
  /colorIndigo  { .31 0   .5  }
  /colorLime    { 0   1   0   }
  /colorMaroon  { .5  0   0   }
  /colorNavy    { 0   0   .5  }
  /colorOlive   { .5  .5  0   }
  /colorOrange  { 1   .56 0   }
  /colorPurple  { .5  0   .5  }
  /colorRed     { 1   0   0   }
  /colorSilver  { .75 .75 .75 }
  /colorTeal    { 0   .5  .5  }
  /colorViolet  { .94 .5  .94  }
  /colorWhite   { 1   1   1   }
  /colorYellow  { 1   1   0   }
>> def
colors begin

-- 
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof

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Looping over all defined colours Cecil Westerhof <Cecil@decebal.nl> - 2012-11-11 11:34 +0100
  Re: Looping over all defined colours Don Lancaster <don@tinaja.com> - 2012-11-11 09:52 -0800
  Re: Looping over all defined colours Cecil Westerhof <Cecil@decebal.nl> - 2012-11-17 14:50 +0100

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