Removed ribbon gradient overlay that QuantumDeveloper pointed out.
Styled Ribbon/RibbonToggleButton.xaml based off of Ribbon/RibbonRadioButton.xaml that kiangtengl styled.
Removed highlight glow on RibbonGroup.xaml.
Changed the brush for the application menu.
Added code to hide the title bar on ribbon load since this is not a ribbon window.
Changed to a clean window for the ribbon demo.
Styled the RibbonMenuButton.xaml and RibbonSplitButton.xaml to match the other buttons.
The Ribbon/RibbonSplitButton.xaml still needs some work.  I don't think it is supposed to have a border when you first mouse over it.  Also, it appears to still have rounded corners.