How to align dark theme with dark theme colors from MaterialDesignInXAML?

[bert2]

I'm using the Autocomplete from MaterialDesignExtensions in an app using MaterialDesignInXAML. Unfortunately the colors of both dark themes do not match:

Is there a quick way to make MaterialDesignExtensions use the dark theme colors from MaterialDesignInXAML?

I could probably set the Background and Foreground on the Autocomplete explicitly, but that feels like working around the theming.

This is how I'm loading the styles in my App.xaml:

<Application.Resources>
    <ResourceDictionary>
      <ResourceDictionary.MergedDictionaries>
        <mat:BundledTheme BaseTheme="Dark" PrimaryColor="DeepPurple" SecondaryColor="Lime" />
        <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/Generic.xaml" />
        <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Defaults.xaml" />
        <ResourceDictionary Source="pack://application:,,,/MaterialDesignExtensions;component/Themes/Generic.xaml" />
        <ResourceDictionary Source="pack://application:,,,/MaterialDesignExtensions;component/Themes/MaterialDesignDarkTheme.xaml" />
      </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
  </Application.Resources>

[bert2]

The workaround is the set the Background to MaterialDesignPaper:

<matex:Autocomplete
  Margin="0,16,0,0"
  AutocompleteSource="{Binding}"
  Background="{DynamicResource MaterialDesignPaper}"
  Hint="commit"
  SearchOnInitialFocus="True"
  SelectedItem="{Binding SelectedCommit, Mode=TwoWay}"
  Style="{StaticResource MaterialDesignAutocompleteDense}">
  <matex:Autocomplete.ItemTemplate>
    <DataTemplate DataType="{x:Type local:Commit_}">
      <TextBlock VerticalAlignment="Center">
        <Run FontFamily="Consolas" Text="{Binding ShortSha, Mode=OneWay}" />
        <Run Text="{Binding ShortMessage, Mode=OneWay}" />
      </TextBlock>
    </DataTemplate>
  </matex:Autocomplete.ItemTemplate>
</matex:Autocomplete>

[spiegelp]

@bert2 I use MaterialDesignBackground as background throughout the templates. It looks like that MaterialDesignInXAML tends to use MaterialDesignPaper.

Setting the color via the control's color properties might be a solution, because the templates rely on them with bindings and dynamic resources. Another way is to override MaterialDesignBackground in your App.xaml with the desired color like this:

<SolidColorBrush x:Key="MaterialDesignBackground" Color="{Binding Color, Source={StaticResource MaterialDesignPaper}}" />

[bert2]

@spiegelp, that works too, thanks!

By the way, thank you for making it so super easy to replace those ugly default window borders 👍