Color_resources

For color displays, gnuplot honors the following resources (shown here with their default values) or the greyscale resources. The values may be color names as listed in the X11 rgb.txt file on your system, hexadecimal RGB color specifications (see X11 documentation), or a color name followed by a comma and an intensity value from 0 to 1. For example, blue, 0.5 means a half intensity blue.

	gnuplot*background: white
	gnuplot*textColor: black
	gnuplot*borderColor: black
	gnuplot*axisColor: black
	gnuplot*line1Color: red
	gnuplot*line2Color: green
	gnuplot*line3Color: blue
	gnuplot*line4Color: magenta
	gnuplot*line5Color: cyan
	gnuplot*line6Color: sienna
	gnuplot*line7Color: orange
	gnuplot*line8Color: coral

The command-line syntax for these is simple only for background, which maps directly to the usual X11 toolkit option "-bg". All others can only be set on the command line by use of the generic "-xrm" resource override option

Examples:

     gnuplot -background coral

to change the background color.

     gnuplot -xrm 'gnuplot*line1Color:blue'

to override the first linetype color.