files-theme-xcad.xaml

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:BelowWindows10version1809="http://schemas.microsoft.com/winfx/2006/xaml/presentation?IsApiContractNotPresent(Windows.Foundation.UniversalApiContract, 7)"
    xmlns:Windows10version1809="http://schemas.microsoft.com/winfx/2006/xaml/presentation?IsApiContractPresent(Windows.Foundation.UniversalApiContract, 7)">
    <ResourceDictionary.ThemeDictionaries>
        <ResourceDictionary x:Key="Default">
            <!-- Background Resources -->
            <SolidColorBrush x:Key="RootBackgroundBrush" Color="#AA171717" />
            <Color x:Key="SolidBackgroundFillColorBase">#171717</Color>
            <Color x:Key="SolidBackgroundFillColorSecondary">#171717</Color>
            <Color x:Key="SolidBackgroundFillColorTertiary">#1D1D1D</Color>
            <Color x:Key="SolidBackgroundFillColorQuarternary">#1D1D1D</Color>
            <SolidColorBrush x:Key="SolidBackgroundFillColorBaseBrush" Color="{ThemeResource SolidBackgroundFillColorBase}" />
            <SolidColorBrush x:Key="SolidBackgroundFillColorSecondaryBrush" Color="{ThemeResource SolidBackgroundFillColorSecondary}" />
            <SolidColorBrush x:Key="SolidBackgroundFillColorTertiaryBrush" Color="{ThemeResource SolidBackgroundFillColorTertiary}" />
            <SolidColorBrush x:Key="SolidBackgroundFillColorQuarternaryBrush" Color="{ThemeResource SolidBackgroundFillColorQuarternary}" />
            <!-- Acrylic Resources -->
            <Color x:Key="SolidBackgroundAcrylic">#1D1D1D</Color>
            <!-- Accent Color -->
            <Color x:Key="SystemAccentColor">#2E2E2E</Color>
            <Color x:Key="SystemAccentColorDark1">#727272</Color>
			<!-- Status Bar Background -->
            <SolidColorBrush x:Key="StatusBarBackgroundBrush" Color="{ThemeResource SolidBackgroundFillColorBase}" />
            <!-- Toolbar Background -->
            <SolidColorBrush x:Key="NavigationToolbarBackgroundBrush" Color="{ThemeResource SolidBackgroundFillColorSecondary}" />
			<!--  Sidebar  -->
            <x:Double x:Key="SidebarTintOpacity">0.9</x:Double>
            <x:Double x:Key="SidebarTintLuminosityOpacity">0.9</x:Double>
			<!-- Tab Resources -->
            <SolidColorBrush x:Key="HorizontalTabControlBackgroundBrush" Color="{ThemeResource SolidBackgroundFillColorSecondary}" />
            <SolidColorBrush x:Key="TabViewItemHeaderBackground" Color="{ThemeResource SolidBackgroundFillColorSecondary}" />
            <SolidColorBrush x:Key="TabViewItemHeaderBackgroundSelected" Color="{ThemeResource SolidBackgroundFillColorQuarternary}" />
            <SolidColorBrush x:Key="TabViewItemHeaderBackgroundPressed" Color="{ThemeResource SolidBackgroundFillColorQuarternary}" />
            <SolidColorBrush x:Key="TabViewItemHeaderBackgroundPointerOver" Color="{ThemeResource SolidBackgroundFillColorQuarternary}" />
            <SolidColorBrush x:Key="TabContainerFillColorPrimary" Color="{ThemeResource SolidBackgroundFillColorSecondary}" />
            <SolidColorBrush x:Key="TabContainerFillColorSecondary" Color="{ThemeResource SolidBackgroundFillColorSecondary}" />
        </ResourceDictionary>
        <!-- no light theme ;)
        <ResourceDictionary x:Key="Light">
        </ResourceDictionary>
        -->
    </ResourceDictionary.ThemeDictionaries>
</ResourceDictionary>