diff --git a/DialogHost.Avalonia/DialogHost.axaml b/DialogHost.Avalonia/DialogHost.axaml
index cf1772f..deec377 100644
--- a/DialogHost.Avalonia/DialogHost.axaml
+++ b/DialogHost.Avalonia/DialogHost.axaml
@@ -25,11 +25,8 @@
     <Setter Property="HorizontalAlignment" Value="Stretch" />
     <Setter Property="VerticalAlignment" Value="Stretch" />
     <Setter Property="DialogMargin" Value="8" />
-    <Setter Property="OverlayBackground"
-            Value="{utilities:MultiDynamicResource DefaultBrush=Black, ResourceKeys=SystemControlBackgroundBaseHighBrush}" />
-    <Setter Property="Background"
-            Value="{utilities:MultiDynamicResource DefaultBrush=Black, ResourceKeys=SystemControlBackgroundAltHighBrush;MaterialDesignPaper;MaterialPaperBrush}">
-    </Setter>
+    <Setter Property="OverlayBackground" Value="{DynamicResource DialogHostOverlayBackgroundMixinBrush}" />
+    <Setter Property="Background" Value="{DynamicResource DialogHostBackgroundMixinBrush}" />
     <Setter Property="dialogHostAvalonia:DialogHostStyle.ClipToBounds" Value="False" />
     <Setter Property="dialogHostAvalonia:DialogHostStyle.CornerRadius" Value="2" />
     <Setter Property="Template">
diff --git a/DialogHost.Avalonia/DialogHostStyles.axaml.cs b/DialogHost.Avalonia/DialogHostStyles.axaml.cs
index 79c01da..d20a540 100644
--- a/DialogHost.Avalonia/DialogHostStyles.axaml.cs
+++ b/DialogHost.Avalonia/DialogHostStyles.axaml.cs
@@ -1,5 +1,8 @@
-using Avalonia.Controls;
+using System.Collections.Generic;
+using Avalonia;
+using Avalonia.Controls;
 using Avalonia.Markup.Xaml;
+using Avalonia.Media;
 using Avalonia.Styling;
 
 namespace DialogHostAvalonia {
@@ -19,7 +22,7 @@ namespace DialogHostAvalonia {
     /// &lt;/Application&gt;
     /// </code>
     /// </remarks>
-    public class DialogHostStyles : Styles {
+    public class DialogHostStyles : Styles, IResourceNode {
         /// <inheritdoc />
         public DialogHostStyles() {
             AvaloniaXamlLoader.Load(this);
@@ -29,5 +32,56 @@ public DialogHostStyles() {
         public DialogHostStyles(IResourceHost owner) : base(owner) {
             AvaloniaXamlLoader.Load(this);
         }
+
+        /// <summary>
+        /// Lists of resource keys which will be used as defaults for DialogHost.Background property
+        /// </summary>
+        public static IReadOnlyList<string> BackgroundColorKeys { get; } = ["SystemControlPageBackgroundChromeLowBrush"];
+
+        /// <summary>
+        /// Lists of resource keys which will be used as defaults for DialogHost.OverlayBackground property
+        /// </summary>
+        public static IReadOnlyList<string> OverlayBackgroundColorKeys { get; } =
+            ["SystemControlBackgroundAltHighBrush", "MaterialDesignPaper", "MaterialPaperBrush"];
+
+        bool IResourceNode.HasResources => true;
+
+        /// <summary>
+        /// Tries to find a resource within the object.
+        /// </summary>
+        /// <param name="key">The resource key.</param>
+        /// <param name="theme">Theme used to select theme dictionary.</param>
+        /// <param name="value">
+        /// When this method returns, contains the value associated with the specified key,
+        /// if the key is found; otherwise, null.
+        /// </param>
+        /// <returns>
+        /// True if the resource if found, otherwise false.
+        /// </returns>
+        bool IResourceNode.TryGetResource(object key, ThemeVariant? theme, out object? value) {
+            if (key is "DialogHostBackgroundMixinBrush") {
+                foreach (var colorKey in BackgroundColorKeys) {
+                    if (Application.Current!.TryGetResource(colorKey, theme, out value)) {
+                        return true;
+                    }
+                }
+                
+                value = Brushes.Black;
+                return true;
+            }
+
+            if (key is "DialogHostOverlayBackgroundMixinBrush") {
+                foreach (var colorKey in OverlayBackgroundColorKeys) {
+                    if (Application.Current!.TryGetResource(colorKey, theme, out value)) {
+                        return true;
+                    }
+                }
+                
+                value = Brushes.Black;
+                return true;
+            }
+
+            return base.TryGetResource(key, theme, out value);
+        }
     }
 }
\ No newline at end of file
diff --git a/DialogHost.Avalonia/Utilities/MultiDynamicResourceExtension.cs b/DialogHost.Avalonia/Utilities/MultiDynamicResourceExtension.cs
deleted file mode 100644
index c005eff..0000000
--- a/DialogHost.Avalonia/Utilities/MultiDynamicResourceExtension.cs
+++ /dev/null
@@ -1,95 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using Avalonia;
-using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
-using Avalonia.Markup.Xaml.Converters;
-using Avalonia.Media;
-using Avalonia.Styling;
-
-namespace DialogHostAvalonia.Utilities
-{
-    /// <summary>
-    /// Allows binding to several different DynamicResources
-    /// </summary>
-    // TODO: Replace it with proper implementation when https://github.com/AvaloniaUI/Avalonia/issues/15270 will be resolved
-    internal class MultiDynamicResourceExtension : MarkupExtension
-    {
-        public IBrush DefaultBrush { get; set; }
-
-        public object ResourceKeys { get; set; }
-
-        public override object ProvideValue(IServiceProvider serviceProvider)
-        {
-            var provideValueTarget = serviceProvider.GetService<IProvideValueTarget>();
-            if (provideValueTarget is null)
-            {
-                throw new InvalidOperationException(
-                    "Can't resolve IProvideValueTarget from Avalonia service provider.");
-            }
-
-            var setter = (Setter)provideValueTarget.TargetObject;
-            var targetProperty = setter.Property;
-
-            if (ResourceKeys is not string resourceKey)
-            {
-                throw new InvalidOperationException(
-                    "ResourceKeys should be string with ; delimeter");
-            }
-
-            var resourceKeys = resourceKey.Split(';');
-            var source = resourceKeys
-                .Select(key => Application.Current!
-                    .GetResourceObservable(key, GetConverter(targetProperty)));
-            var testObservable = new MultiDynamicResourceObservable(source, DefaultBrush);
-            return testObservable.ToBinding();
-        }
-
-        private static Func<object?, object?>? GetConverter(AvaloniaProperty? targetProperty)
-        {
-            if (targetProperty?.PropertyType == typeof(IBrush))
-            {
-                return x => ColorToBrushConverter.Convert(x, typeof(IBrush));
-            }
-
-            return null;
-        }
-
-        public sealed class MultiDynamicResourceObservable : IObservable<object?>, IDisposable
-        {
-            public MultiDynamicResourceObservable(IEnumerable<IObservable<object?>> observables, object? defaultValue)
-            {
-                var dictionary = observables.ToDictionary(observable => observable, _ => (object?)null);
-                var disposables = dictionary.Keys
-                    .Select(obs => obs
-                        .Subscribe(o =>
-                        {
-                            dictionary[obs] = o;
-                            var newValue =
-                                dictionary.Values.LastOrDefault(o1 => o1 is not UnsetValueType && o1 is not null) ??
-                                defaultValue;
-                            _subject.OnNext(newValue);
-                        }))
-                    .ToList();
-                _disposable = new CompositeDisposable(disposables);
-            }
-
-            private readonly CompositeDisposable _disposable;
-            private readonly BehaviorSubject<object?> _subject = new(null);
-
-            /// <inheritdoc />
-            public IDisposable Subscribe(IObserver<object?> observer)
-            {
-                return _subject.Subscribe(observer);
-            }
-
-            /// <inheritdoc />
-            public void Dispose()
-            {
-                _disposable.Dispose();
-                _subject.Dispose();
-            }
-        }
-    }
-}
\ No newline at end of file