pm3d plot - only one color - Graphics

In article <1167735392.721302.324050@42g2000cwt.googlegroups.com>,
<secretagent007@web.de> wrote:
>Hello!
>
>The default color gradient in pm3d plots is "set palette rgbformulae
>7,5,15".
>How do I have to change this setting to get a color gradient in one
>single color?
>I want for example a nice green from dark to light, or a blue, an
>orange, but not from black to yellow like the default is set.

white to dark blue:
set palette rgbformulae 5, 7, 8 negative

permute indices as desired to get green or red scales
--
Ethan A Merritt