NAME
	  DtMtlGetDiffuseClr - Get the diffuse color of	the given
	  material.

     SYNOPSIS
	  #include <Dt.h>

	  int  DtMtlGetDiffuseClr( char	*name, int index, float	*red, float *green, float *blue	)

     DESCRIPTION
	  DtMtlGetDiffuseClr() returns the diffuse color of the
	  material name. The diffuse color is returned via the
	  pointers to the red, green, and blue parameters.  The	index
	  parameter should be set to 0.

	  Some implementations of Dt support multiple sub-materials
	  within a single group, with the different sub-materials
	  being	indexed	by the index parameter.	A group	will have a
	  single material, with	different sets of colors for different
	  regions indexed by the index parameter. In such
	  implementations, DtMtlGetDiffuseClr()	will return an RGB
	  value	for each indexed sub-material in the material.


     OPENMODEL IMPLEMENTATION
	  The OpenModel	implementation of Dt does not support multiple
	  color	sets in	a single material.  A warning message is
	  printed if the index parameter is non-zero but the parameter
	  is otherwise ignored.	 Colors	per vertex are implemented
	  using	DtShapeGetVerticesColor(3W).


     DIAGNOSTICS
	  DtMtlGetDiffuseClr() returns one on success and zero on
	  failure.


     FILES
	  Link with -lDtOMio