title: Change Accent Color in Windows 10 UWP
body: <p>I dont really want to use the accent color that the user has chosen in Windows in my app, and instead want to have my own color show.
  I can change it manually on all the items by by making new styles, but it is just in so many places in the normal controls, that it would be nice to do on the app level.</p>
  
  <p>I tried setting <code>&lt;SolidColorBrush x:Key="SystemAccentColor" Color="#FFCB2128" /&gt;</code> but for some reason that does noting on some items and turns others like the video controls gray. </p>