Comment 1 for bug 166396

Background colour is currently exported only to png files,
to my knowledge -- it isn't even exported to SVG ! (At
least, not in standard SVG. It is recognized only by
inkscape and possibly sodiodi.)

As such, I'm inclined to remove this confusing option from
the user interface, and perhaps even stop parsing the
pagecolor directive: this and other bug reports show that it
is [at least currently] misleading to show this background
colour when we aren't exporting the background colour.

I believe that the icon preview window is to support viewing
on different background colours; this is the main
functionality we want. Exporting differently between png
and other formats seems wrong.

Other opinions?