Office2013 theme cannot be set through the StyleManager
. Instead you need to use implicit styles to take advantage of this theme as described in the Office2013 tutorial
. You can take a look at this blog post
outlining the advantages of the implicit styling mechanism. I also attached a sample solution demonstrating this approach so that you can give it a try on your side.
You can also take a look at the RibbonWindow
tutorial and specifically its Themes
section for more information on how to apply a built-in theme on the RibbonWindow