Graphic Converter

From	me@home.spamsucks.ca (Király)
Newsgroups	comp.sys.mac.apps
Subject	Graphic Converter
Date	2016-04-23 16:51 +0000
Organization	A noiseless patient Spider
Message-ID	<nfg97c$usn$1@dont-email.me> (permalink)

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I have a PNG of an old map, it is all black with transparent background. 
Is there a way with Graphic Converter to select all of the black and 
change it all to white, while retaining the transparent background? I 
can't figure out how to do that without selecting each black element 
individually (there are hundreds) and changing them one at a time. 
Thanks.

-- 
K.

Lang may your lum reek.

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Graphic Converter me@home.spamsucks.ca (Király) - 2016-04-23 16:51 +0000
  Re: Graphic Converter Jolly Roger <jollyroger@pobox.com> - 2016-04-23 19:53 +0000
  Re: Graphic Converter Nelson <nelson@nowhere.com> - 2016-04-23 17:44 -0400
    Re: Graphic Converter Jolly Roger <jollyroger@pobox.com> - 2016-04-24 03:21 +0000
      Re: Graphic Converter Nelson <nelson@nowhere.com> - 2016-04-24 06:50 -0400
        Re: Graphic Converter Jolly Roger <jollyroger@pobox.com> - 2016-04-24 15:31 +0000
        Re: Graphic Converter me@home.spamsucks.ca (Király) - 2016-04-25 03:52 +0000
          Re: Graphic Converter Jolly Roger <jollyroger@pobox.com> - 2016-04-25 16:32 +0000
            Re: Graphic Converter Nelson <nelson@nowhere.com> - 2016-04-26 07:26 -0400

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