Index: Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/MacroStabilityInwards/MacroStabilityInwardsSoilLayerOneDEntityReadExtensionsTest.cs
===================================================================
diff -u -reed141519790c00aff15e16a4c2b8a73ee26d17a -ra25ab906f08e5e263ebb35920acc3ee1bdd928df
--- Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/MacroStabilityInwards/MacroStabilityInwardsSoilLayerOneDEntityReadExtensionsTest.cs	(.../MacroStabilityInwardsSoilLayerOneDEntityReadExtensionsTest.cs)	(revision eed141519790c00aff15e16a4c2b8a73ee26d17a)
+++ Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/MacroStabilityInwards/MacroStabilityInwardsSoilLayerOneDEntityReadExtensionsTest.cs	(.../MacroStabilityInwardsSoilLayerOneDEntityReadExtensionsTest.cs)	(revision a25ab906f08e5e263ebb35920acc3ee1bdd928df)
@@ -53,7 +53,7 @@
             // Setup
             var random = new Random(31);
             double top = random.NextDouble();
-            int color = Color.FromKnownColor(random.NextEnumValue<KnownColor>()).ToInt32();
+            int? color = Color.FromKnownColor(random.NextEnumValue<KnownColor>()).ToInt32();
             bool isAquifer = random.NextBoolean();
             const double abovePhreaticLevelMean = 0.3;
             const double abovePhreaticLevelCoefficientOfVariation = 0.2;
@@ -104,7 +104,8 @@
             Assert.AreEqual(top, layer.Top);
             MacroStabilityInwardsSoilLayerData data = layer.Data;
             Assert.AreEqual(isAquifer, data.IsAquifer);
-            Assert.AreEqual(Color.FromArgb(color), data.Color);
+            Assert.IsNotNull(color);
+            Assert.AreEqual(Color.FromArgb(color.Value), data.Color);
             Assert.AreEqual(entity.MaterialName, data.MaterialName);
 
             DistributionAssert.AreEqual(new VariationCoefficientLogNormalDistribution(2)