Black background in preview window

Is there any way to have a black background rather than a white one in Motion's Preview window?

Also, is there any way to make the Preview window larger?

TIA

Um, the preview window's background IS black. No way to make it larger but in the file browser you can double-click on an asset to open it into a large screen player.

I should have been more specific. I mean that I would like it to be black (sometimes) when previewing Live Fonts. It's always white for those. No big deal either way. Just thought there may be a way of changing it.

Ah - LiveFonts. No, no way to change it that I know of. Would be nice if you could make it white for some of the particle effects, like black smoke. I smell a feature request! -
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Mark