Laba1Loco/Laba1Loco/DrawingLoco.cs

@@ -10,10 +10,6 @@ namespace Laba1Loco
 {
     internal class DrawingLoco : DrawingTrain
     {
-        public void setAdditionalColor(Color color)
-        {
-            (EntityTrain as EntityLoco).AdditionalColor = color;
-        }
         /// <summary>
         /// Инициализация свойств
         /// </summary>

Laba1Loco/Laba1Loco/DrawingTrain.cs

@@ -10,10 +10,6 @@ namespace Laba1Loco
 {
     internal class DrawingTrain
     {
-        public void setBodyColor(Color color)
-        {
-            EntityTrain.BodyColor = color;
-        }
         public IMoveableObject GetMoveableObject => new DrawningObjectTrain(this);
         /// <summary>
         /// Класс-сущность

Laba1Loco/Laba1Loco/EntityLoco.cs

@@ -9,7 +9,10 @@ namespace Laba1Loco
 {
     internal class EntityLoco : EntityTrain
     {
-        public Color AdditionalColor { get; set; }
+        public Color AdditionalColor { get; private set; }
+
+        public void setAdditionalColor(Color color) { AdditionalColor = color; }
+
         /// <summary>
         /// Признак (опция) наличия трубы
         /// </summary>

Laba1Loco/Laba1Loco/EntityTrain.cs

@@ -20,7 +20,10 @@ namespace Laba1Loco
         /// <summary>
         /// Основной цвет
         /// </summary>
-        public Color BodyColor { get; set; }
+        public Color BodyColor { get; private set; }
+
+        public void setBodyColor(Color color) { BodyColor = color; }
+
         /// <summary>
         /// Шаг перемещения поезда
         /// </summary>

Laba1Loco/Laba1Loco/FormTrainConfig.cs

@@ -140,12 +140,12 @@ namespace Laba1Loco
             switch (((Label)sender).Name)
             {
                 case "labelColor":
-                    _train.setBodyColor((Color)e.Data.GetData(typeof(Color)));
+                    _train.EntityTrain.setBodyColor((Color)e.Data.GetData(typeof(Color)));
                     break;
                 case "labelAdditionalColor":
                     if (!(_train is DrawingLoco))
                         return;
-                    (_train as DrawingLoco).setAdditionalColor((Color)e.Data.GetData(typeof(Color)));
+                    (_train.EntityTrain as EntityLoco).setAdditionalColor((Color)e.Data.GetData(typeof(Color)));
                     break;
             }
             DrawTrain();