Tank/Tank/DrawiningTankEqutables.cs

@@ -21,7 +21,7 @@ namespace Tank
             {
                 throw new ArgumentNullException(nameof(y));
             }
-            if (x.GetType() != y.GetType())
+            if (x.GetType().Name != y.GetType().Name)
             {
                 return false;
             }
@@ -39,6 +39,14 @@ namespace Tank
             }
             if (x is DrawTank && y is DrawTank)
             {
+                if (x.Tank as EntityTank == null)
+                {
+                    throw new ArgumentNullException(nameof(x));
+                }
+                if (y.Tank as EntityTank == null)
+                {
+                    throw new ArgumentNullException(nameof(y));
+                }
                 if ((x.Tank as EntityTank).AdditionalColor != (y.Tank as EntityTank).AdditionalColor)
                 {
                     return false;

Tank/Tank/FormTankConfig.cs

@@ -27,14 +27,14 @@ namespace Tank
         {
             InitializeComponent();
 
-            panelCyan.MouseDown += panelColor_MouseDown;
+            panelSilver.MouseDown += panelColor_MouseDown;
             panelRed.MouseDown += panelColor_MouseDown;
             panelOrange.MouseDown += panelColor_MouseDown;
             panelYellow.MouseDown += panelColor_MouseDown;
             panelGreen.MouseDown += panelColor_MouseDown;
+            panelCyan.MouseDown += panelColor_MouseDown;
             panelBlue.MouseDown += panelColor_MouseDown;
             panelPink.MouseDown += panelColor_MouseDown;
-            panelSilver.MouseDown += panelColor_MouseDown;
 
             defaultColor = labelColor.BackColor;
             buttonCancel.Click += (s, e) => Close();

Tank/Tank/TanksCollectionInfo.cs

@@ -21,9 +21,7 @@ namespace Tank
         {
             if (other == null || Name == null || other.Name == null) return false;
             if (Name == other.Name) return true;
-
             throw new NotImplementedException();
-            //return Name.Equals(other.Name);
         }
 
         public override int GetHashCode()