\documentclass[pstricks]{standalone}
\usepackage{pst-marble}
\begin{document}
\begin{pspicture}(-3,-6)(3,6)
  \psMarble[
    colors={
      [183 168 135]
      [106 107  91]
    },
    background={
      [100 100 85]
    },
    viscosity=1000,
    oversample=1,
    actions={
      0 0 500 1000 0 colors 0 get 125 34 uniform-drops
       90 [ 7 150 -75 tines ] 80 200 20 rake
      -90 [ 7 150   0 tines ] 80 200 20 rake
      0 0 500 1000 0 colors 1 get 750 12 uniform-drops
      180 [ 3 256   0 tines ] 80 200 20 rake
        0 [ 3 256 -128 tines ] 80 200 20 rake
    }
  ](6,12)
\end{pspicture}
\end{document}
