col

   'col' <name> <red> <green> <blue> [<maxvalue>]
User defined new colors which can be used with plot/plus. Each of the red, green and blue values must be fraction of maxvalue (def:1). See also ”prnt” how to list the available colors. The user might use this command to store his personal colors in the “.cgx” file in his home directory. For example:

col dg 3 89 26 155

define a dark green (dg) color.