I had a lot of pages in my application and I had decided to make a global ApplicationBar style in App.Resources:
<
I believe, ApplicationBar properties cannot use Binding
or styling the way you're trying, as it is not a silverlight control. Although you can put the whole
applicationbar as a resource. Like so
<shell:ApplicationBar x:Key="MyAppBar" IsVisible="True" BackgroundColor="#006699">
<shell:ApplicationBarIconButton IconUri="/Images/image.png" Text="image" IsEnabled="True"/>
</shell:ApplicationBar>
EDIT: Or you could just put this in the resource if you want your application bar color to change.
<shell:ApplicationBar x:Key="MyAppBar" IsVisible="True" BackgroundColor="#006699">
</shell:ApplicationBar>
And add buttons from code behind. although, I haven't come across a scenario where this would help.