[CentOS] force b/w printing

Tue Aug 3 10:41:00 UTC 2010
John Doe <jdmls at yahoo.com>

From: Janez Kosmrlj <postnalista at googlemail.com>
>Has anyone an idea, how to force users to print b/w on a color printer.
>We are in the process to deploy color printers to some of our offices where they 
>use centos 5.5 as their OS. They need the printers to print some advertisement 
>material. But for everything else, they don't need it. And because of the costs 

>of the color printing we would like to force them to use B/W where not 
>explicitly necessary. Is there a way to force  a printer driver to be just B/W 
>even if it is a color printer. So i could install a second color printer which 
>would only be available to a special print user. 

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