pslatex.trm: useless \colorgray into tex file

[Petr M. <mi...@ph...>]

Currently, "make tutorial" fails due to "TeX capacity exceeded".

Reason: try
 	gnuplot eg7.plt

There seems to be a bug: EPSLATEX_set_color() produces many many 
\colorgray{} commands into output .tex file, which are completely useless, 
because color for filled rectangles is set directly in .eps file.

Can a pslatex.trm guru have a look?

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PM