On my monitor it is showing yellow for the simpleviewer area, but yes, I did fix it, but haven't uploaded it to the test site yet.  I never could figure out what the problem was, so I ended up redoing it.

To add to this, it looks like it should in svbuilder, the problem is after it's been imported into Dreamweaver.

I'm having the exact same problem.  The first time I created this simpleviewer it was correct with a white background, but I noticed I had an image in the viewer that I did not want.  I opened it back up in Lightroom 2, deleted the photo, exported the files again, opened with svbuilder, hit it with the preset I created, imported it back into dreamweaver, and now the background is yellow!  I have no idea what is causing this, but I'm getting very frustrated.

http://www.robbivens.com/test/

Any ideas?

Thanks,
Rob