Adjusting PDF properties changes canvas color?

When I adjust properties on a PDF the canvas color changes from nearly black to bluish gray. Is there a way to prevent this from happening? Or a way to change the color back?

I'm not talking about the background color of the PDF page itself (which can be accessed at Document > Background > Add/Replace). I'm talking about the color that surrounds the page and is the screen background in Full Screen Mode.

I have tried this in both in Acrobat 8.3.1 and Acrobat 11.0.0 for the Mac and the same thing happens.

Thanks!

Chris