diff --git a/src/Uno.UI.FluentTheme/Uno.UI.FluentTheme.csproj b/src/Uno.UI.FluentTheme/Uno.UI.FluentTheme.csproj
index 5bb464386450..ff462b234286 100644
--- a/src/Uno.UI.FluentTheme/Uno.UI.FluentTheme.csproj
+++ b/src/Uno.UI.FluentTheme/Uno.UI.FluentTheme.csproj
@@ -38,6 +38,13 @@
 		<ProjectReference Include="..\Uno.UI\Uno.UI.csproj" />
 	</ItemGroup>
 	
+	<ItemGroup Condition="$(IsMonoAndroid) or $(IsXamarinIOS) or $(IsXamarinMac)">
+		<Reference Include="System.Numerics" />
+		<Reference Include="System.Numerics.Vectors" />
+		<Reference Include="System.json" />
+		<Reference Include="System.Memory" />
+	</ItemGroup>
+
 	<ItemGroup>
 		<PackageReference Include="Uno.SourceGenerationTasks" />
 	</ItemGroup>
diff --git a/src/Uno.UI.Tests/Windows_UI_Xaml/Given_ThemeResource.cs b/src/Uno.UI.Tests/Windows_UI_Xaml/Given_ThemeResource.cs
index ca8ab67235cc..c2e6f28f1b59 100644
--- a/src/Uno.UI.Tests/Windows_UI_Xaml/Given_ThemeResource.cs
+++ b/src/Uno.UI.Tests/Windows_UI_Xaml/Given_ThemeResource.cs
@@ -69,11 +69,13 @@ public async Task When_Theme_Changed_ResourceKey()
 
 				var textBlock = page.ResourceKeyThemedTextBlock;
 
-				Assert.AreEqual(Colors.Black, (textBlock.Foreground as SolidColorBrush).Color);
+				// Dark text
+				Assert.IsTrue(((SolidColorBrush)textBlock.Foreground).Color.R < 100);
 
 				await SwapSystemTheme();
 
-				Assert.AreEqual(Colors.White, (textBlock.Foreground as SolidColorBrush).Color);
+				// Light text
+				Assert.IsTrue(((SolidColorBrush)textBlock.Foreground).Color.R > 200);
 			}
 		}
 
@@ -88,11 +90,13 @@ public async Task When_Theme_Changed_ImplicitStyle()
 
 				app.HostView.Children.Add(button);
 
-				Assert.AreEqual(Colors.Black, (button.Foreground as SolidColorBrush).Color);
+				// Dark text
+				Assert.IsTrue(((SolidColorBrush)button.Foreground).Color.R < 100);
 
 				await SwapSystemTheme();
 
-				Assert.AreEqual(Colors.White, (button.Foreground as SolidColorBrush).Color);
+				// Light text
+				Assert.IsTrue(((SolidColorBrush)button.Foreground).Color.R > 200);
 			}
 		}