SafeSkinColor needs to catch InvalidOperationException, too, it seems

1.4/source/RJW_Menstruation/RJW_Menstruation/Utility.cs

@@ -463,6 +463,10 @@ namespace RJW_Menstruation
             {
                 return Color.white;
             }
+            catch (InvalidOperationException)   // And sometimes it can try to pull the value of a Nullable without checking, too
+            {
+                return Color.white;
+            }
         }
     }
 }