background color only set in plot area
I have been experimenting with Ploticus, and think it is great. But I
have been having a problem setting the background color.
I attempt to set the background color using...
...but only the plot area is set to black. The area to the left and
below the x and y axes is not set.
I have also tried setting the background color using the command line
argument, with the same effect.
I normally generate .svg files, but the same thing happens with .gif
How can I set the background color for the entire graphic?