+.B \-mono
+Make all the rocks the same color.
+.TP 8
+.B \-ncolors colors
+How many different colors to use. Default 5. Colors are chosen randomly.
+.TP 8
+.B \-install
+Install a private colormap for the window.
+.TP 8
+.B \-visual \fIvisual\fP
+Specify which visual to use. Legal values are the name of a visual class,
+or the id number (decimal or hex) of a specific visual.
+.TP 8
+.B \-count \fIinteger\fP