Obviously it can be done since Firebug does, but I wasn\'t sure if they were doing a lot of processing on the CSSDeclarations or if there was something in the DOM that I am
I actually found the answer I was looking for.
cssText is what I was looking for. It's noted here: http://www.w3.org/TR/DOM-Level-2-Style/css.html#CSS-CSSStyleDeclaration
The reason it wasn't working is because I was trying it when the page loaded, but it was being fired before the actual rendering occured, so it was returning undefined.
I was doing some major revisions and tried it after the page finished loading completely, and it showed up.
Yay!