\documentclass[pstricks]{standalone}

\documentclass[pstricks]{standalone}
\usepackage{pst-marble}
\begin{document}
\begin{pspicture}(-6,-6)(6,6)
\psMarble[
background={
[64 64 64]
},
colors={
[0.176 0.353 0.129]
[0.635 0.008 0.094]
[0.078 0.165 0.518]
[0.824 0.592 0.031]
[0.059 0.522 0.392]
[0.816 0.333 0.475]
},
viscosity=1000,
actions={
0 0 24 colors 36 concentric-rings
180 [ 20 50 -25 tines ] 40 200 31 rake
0 350 shift
0 480 120 0 -240 jiggle
180 [ -150 450 ] 40 200 31 rake
0 480 120 0 240 jiggle
0 480 120 0 240 jiggle
180 [ -450 150 ] 40 200 31 rake
0 480 120 0 -240 jiggle
}
](-6,-6)(6,6)
\end{pspicture}
\end{document}