PowerToys/src/modules/imageresizer/ui/Themes/HighContrastBlack.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:system="clr-namespace:System;assembly=System.Runtime">
    
    <!--  Metadata  -->
    <system:String x:Key="Theme.Name">HighContrast.Accent4</system:String>
    <system:String x:Key="Theme.Origin">PowerToysImageResizer</system:String>
    <system:String x:Key="Theme.DisplayName">Accent4 (HighContrast)</system:String>
    <system:String x:Key="Theme.BaseColorScheme">HighContrast</system:String>
    <system:String x:Key="Theme.ColorScheme">Accent4</system:String>
    <Color x:Key="Theme.PrimaryAccentColor">White</Color>

    <SolidColorBrush x:Key="SecondaryBackgroundBrush" Color="#FF3a3a3a" />
    <SolidColorBrush x:Key="PrimaryBackgroundBrush" Color="#FF333333" />
    <SolidColorBrush x:Key="PrimaryForegroundBrush" Color="#FFffffff" />
    <SolidColorBrush x:Key="SecondaryForegroundBrush" Color="#FF1aebff" />
    <SolidColorBrush x:Key="PrimaryBorderBrush" Color="White"/>
</ResourceDictionary>