colornames

Gnuplot knows a limited number of color names. You can use these to define the color range spanned by a pm3d palette, to assign a named color to a particular linetype or linestyle, or to define a gradient for the current color palette. To list the known color names, use the command show colornames. Examples:

      set style line 1 linecolor "sea-green"
      set palette defined (0 "dark-red", 1 "white")