       SippShaderGranite ambient specular c3 scale color1 color2 [opacity]
              This  shader  is  very  similar to marble shader in
              that it also mixes two  colors  using  noise()  and
              turbulence().  The  difference is in how the mixing
              is done. The two colors are mixed without  treating
              them separately in any way.

              ambient is a value between 0.0 and 1.0 which deter-
              mines how much of the base color of a surface  that
              is  visible when it is not illuminated by any light
              source.

              specular is a value between 0.0 and  1.0  which  is
              the fraction of color specularly reflected.

              c3 is the shininess of the surface where 0.0 is the
              most dull and 1.0 is the most shiny.

              scale describes how much  the  texture  coordinates
              should  be  scaled before applying the granite tex-
              ture.  The larger the scaling, the smaller the area
              of the granite texture associated with a given area
              of the surface.  A large number results in  a  very
              fine  pattern,  a small number yields a coarse pat-
              tern.

              color1 and color2 is a  list  containing  the  red,
              green  and blue values for the base material.  Each
              being a number between 0.0 and 1.0.

              opacity describes the opacity  of  a  surface.  0.0
              means   totally   transparent,  1.0  means  totally
              opaque.  May be a list of red, green and blue opac-
              ity  values  or  a  single value to be used for all
              color channels.  Optional, default is 1.0.
