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Article #6593

Re: (HELP) How does one create a gold tone in PostScript?

#6593
From: Tim Clark
Date: Thu, 07 Jan 1993 10:51
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In article <1992Dec28.000443.7228@hot.com> Robert_La_Ferla@hot.com writes:
>How does one create a gold tone in PostScript?  I realize that gold is  
>a metal and to create it you need to either render it or use a gold ink  
>but I'm looking for a simpler way to achieve the same effect....
>
>Is there a combination of CMYK values that approximates a gold  
>tone? 

There have been a number of replies pointing out that it's just not
possible to achieve exactly the right effect. However, for those
who do not want the expense of sticking gold leaf onto their pictures,
and are prepared to accept a crude aproximation try an RGB of
238 221 40 (where 255 is the max).

This works quite well on a Tektronix Phaser Postscript printer. This has the
advantage that the wax gives a slight sheen. The result is not unreasonable
on other devices, including colour screens. If you apply the criterion of
displaying the result to the person in the street and asking them what colour
it is - if 9 out of 10 say gold, then it will do. I haven't done exactly
that, but when I used these values for the gold part of the University crest
most who saw it thought it was OK. (I know they were _expecting_ to see
gold, and that no doubt influenced them.)

I would be interested to know what other values people have used.

My values were obtained by simple iteration around integer RGB values
in the range 0 to 255, one idle weekend when we had a Tektronix Phaser on
trial. My partner and I just compared the result, by eye, with the large
area of gold-coloured ink on a common UK cigarette packet! (No flames
for my anti-social smoking habit please :-)
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References: <1992Dec28.000443.7228@hot.com>

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Path: arc1-ca.pugleaf.net!sparky!uunet!pipex!warwick!warwick!not-for-mail
From: cudac@csv.warwick.ac.uk (Tim Clark)
Newsgroups: comp.lang.postscript
Subject: Re: (HELP) How does one create a gold tone in PostScript?
Date: 7 Jan 1993 10:51:34 -0000
Organization: Computing Services, University of Warwick, UK
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