Detect background color of loaded swf?

Is there a way to read the background color of a loaded swf? I know it inherits the color of the main swf its being loaded into but it would be helpful for a swf gallery application i’ve built.

A little background info, I have a site where users submit swf files to share for VJ purposes. They’re posted on my site for anyone to download and use in their VJ projects. I built a universal gallery viewer that was easily updated through xml to posts each artists work. The problem is that the sibmitted movies always have different background colors. I’m using grey for the main swf so that most design elements don’t get lost. Problem is sometimes the artists worked gets comprimised.

Here’s an example: http://www.triggermotion.com/flashViz/zombra/fileshareZombra.php

The swf’s being loaded have a white background and the result isn’t so good in my gallery viewer. In a perfect world, all the loaded swf’s should have a solid graphic for a background. Getting the artists to tweak their FLA’s and send me new swf’s is likely not an option.

Idea’s appreciated.