white stage color to black

Hi, I am very much a newbie, so please be kind ... lol
I am completing a basic web design class, and have one question for this community.
I uploaded several intro slide shows onto a black background. They work fine, but take awhile to load (once viewed and go back-they load much quicker). While waiting to load, the stage area is white. However when I created them, I made sure the stage area was black. Any suggestions as to what I might do to correct this? I just think it would look much better if everything was black until the show appears.
The shows were created in Flash CS 4 (ActionScript 3.0), & the site was created in Dreamweaver CS 4.

Here is a link to view:

http://www.cvartzone.com/art355w10/test/goodrowgc/

Thanks in advance for any suggestions!
Gil