XAXISCOLOR

Syntax: | `SET XAXISCOLOR n SET XAXISCOLOR colorname GET XAXISCOLOR { n }`

Note: The `GET XAXISCOLOR` command always returns the color index, and not the color name, even if `XAXISCOLOR` was set with a color name.

`XAXISCOLOR` controls the color of the x-axis. The parameter `c` can be a numeric scalar or one of the fixed color names.

For example:

`SET XAXISCOLOR 2` uses the colormap index 2
`SET XAXISCOLOR RED` uses the fixed color name "RED"