Using the <B>named</B> colour model has certain advantages over
using other colour models.
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<P>
<B><FONT COLOR="#"><FONT COLOR="#ff334d"><FONT COLOR="#"><FONT COLOR="#"><FONT COLOR="#"><FONT COLOR="#">Firstly as the |dvi| file contains a request
for a colour by <I>name</I>, the actual mix of primary colours used to
obtain the requested colour can be tuned to the characteristics of a
particular printer. In the |dvips| driver the meanings of the colour
names are defined in the header file |color.pro|. Users are encouraged
to produce different versions of this file for any printers they use. By
this means the same dvi file should produce colours of similar
appearance when printed on printers with different colour
characteristics.
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<P>
<B><FONT COLOR="#"><FONT COLOR="#ff334d"><FONT COLOR="#"><FONT COLOR="#"><FONT COLOR="#"><FONT COLOR="#">Secondly, apart from the so called `process colours' that are produced
by mixing primary colours during the print process, one may want to use
`spot' or `custom' colours. Here a particular colour name does not
refer to a mix of primaries, but to a particular ink. The parts of the
document using this colour will be printed separately using this named
