Background color property in browsers

In Inkscape (all versions).

We're currently using <sodipodi:namedview pagecolor="#ff0000" ... to control the background colour.

This has some problems:

• It's not a page colour, it's setting the entire workspace background color. What will we do when we have multiple pages in 1.0?
• It's not a property that works in web browsers. This was evident in the about screen contest where entries that used the page colour would appear in one colour when rendered by inkscape but would be completely different when rendered by the browser as an svg.

To refactor this we should:

• Set a background-color and background-opacity property which most browsers tested WILL use, even though it's not in the svg standard. "Canvas colour" or similar.
• Move to using per-page colours so our multi page support will allow differently coloured pages.

Thoughts?