 opened. Color names are case-insensitive and embedded spaces are ignored. e.g. 

<pre>setenv PGPLOT_FOREGROUND springgreen
</pre>
</dd>

<dt>PGPLOT_BACKGROUND</dt>

<dd><i>Color name.</i> This variable can be used to change the color representation of color index 0 (the ``background'' color) from its device-dependent default (usually black or white). The value of the variable should be a color name defined in the color-name database. If the variable is defined, the effect is the same as a call to <a href="