set rbcols color1 color2 ... colorN
This command specifies a new rainbow color sequence. The
color# arguments may be taken from the 16 GrADS default colors or they may be new
color numbers defined via the set
rgb command. This sequence of colors replaces the default rainbow color sequence whenever the
rainbow colors are used.
set rbcols given without any arguments will return to
the default GrADS rainbow sequence.
set rbcols.