foreground colour. This can be any X-understood colour spec - either a name in the colour database (\fIXlib Volume 1\fR) or a #RRGGBB style definition.
.TP
-\fBbackground\fR \fIstring\R
+\fBbackground\fR \fIstring\fR
background colour. For the panel, this can be a path to an xpm image.