Use GitHubAccentBrush for GitHubProgressBar Foreground

Author: jcansdale

src/GitHub.UI/Assets/Controls.xaml

@@ -21,8 +21,8 @@
 
     <!-- ProgressBar -->
     <Style x:Key="GitHubProgressBar" TargetType="{x:Type ui:GitHubProgressBar}">
-        <Setter Property="Foreground" Value="#999999" />
-        <Setter Property="Background" Value="#DDDDDD" />
+        <Setter Property="Foreground" Value="{DynamicResource GitHubAccentBrush}" />
+        <Setter Property="Background" Value="Transparent" />
         <Setter Property="Height" Value="4" />
         <Setter Property="IsHitTestVisible" Value="False" />
         <Setter Property="Focusable" Value="False" />

src/GitHub.VisualStudio.UI/Views/Dialog/ForkRepositorySelectView.xaml

@@ -28,7 +28,6 @@
     </TextBlock>
 
     <ui:GitHubProgressBar DockPanel.Dock="Top"
-                          Foreground="{DynamicResource GitHubAccentBrush}"
                           IsIndeterminate="True"
                           Style="{DynamicResource GitHubProgressBar}"
                           Visibility="{Binding IsLoading, Converter={ui:BooleanToHiddenVisibilityConverter}}"/>

src/GitHub.VisualStudio.UI/Views/GitHubPane/GitHubPaneView.xaml

@@ -70,7 +70,6 @@
     <Grid>
       <DockPanel Visibility="{Binding ContentOverride, Converter={ghfvs:EqualsToVisibilityConverter None}}">
         <ghfvs:GitHubProgressBar DockPanel.Dock="Top"
-                             Foreground="{DynamicResource GitHubAccentBrush}"
                              IsIndeterminate="True"
                              Style="{DynamicResource GitHubProgressBar}"
                              Visibility="{Binding Content.Content.IsBusy, Converter={ghfvs:BooleanToHiddenVisibilityConverter}, FallbackValue=Hidden}"/>