diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/MainContract.java b/app/src/main/java/ru/volgorobot/vrcatalog/MainContract.java
index e7d3303..991ebef 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/MainContract.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/MainContract.java
@@ -20,7 +20,6 @@ public interface MainContract {
         void onFailureAnswer(int errorCode);
         void refreshTree();
         void startActivityByIntent(Intent intent);
-        int incTreeNodeIndex();
     }
 
     interface Presenter {
@@ -68,8 +67,6 @@ public interface MainContract {
         void setTreeViewChildren(ArrayList<TreeNode> children);
         void onFailureAnswer(int errorCode);
         void swipeLayoutSetRefreshing(boolean state);
-        int incTreeNodeIndex();
-
     }
 
     interface ItemPresenter {
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/FirstLevelNodeViewBinder.java b/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/FirstLevelNodeViewBinder.java
index 7f55e80..acad9cb 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/FirstLevelNodeViewBinder.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/FirstLevelNodeViewBinder.java
@@ -18,16 +18,12 @@ import ru.volgorobot.vrcatalog.model.FirstLevelModel;
 public class FirstLevelNodeViewBinder extends BaseNodeViewBinder implements MainContract.ViewBinder {
     TextView textView;
     ImageView imageView;
-    RelativeLayout layout;
     ViewBinderPresenter viewBinderPresenter;
-    private MainContract.MainActivityView mView;
 
     public FirstLevelNodeViewBinder(View itemView, MainContract.MainActivityView mView, Context context) {
         super(itemView);
         textView = (TextView) itemView.findViewById(R.id.node_name_view);
         imageView = (ImageView) itemView.findViewById(R.id.arrow_img);
-        layout = itemView.findViewById(R.id.parent_node_container_1);
-        this.mView = mView;
         viewBinderPresenter = new ViewBinderPresenter(mView, this, context);
     }
 
@@ -40,13 +36,6 @@ public class FirstLevelNodeViewBinder extends BaseNodeViewBinder implements Main
     public void bindView(TreeNode treeNode) {
         textView.setText(treeNode.getValue().toString());
         imageView.setRotation(treeNode.isExpanded() ? 90 : 0);
-        int index = mView.incTreeNodeIndex();
-        treeNode.setIndex(index);
-        if(index % 2 == 1) {
-            layout.setBackgroundColor(Color.parseColor("#FFFFFF"));
-        } else {
-            layout.setBackgroundColor(Color.parseColor("#BABABA"));
-        }
     }
 
     @Override
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/SecondLevelNodeViewBinder.java b/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/SecondLevelNodeViewBinder.java
index 04c114f..026cf46 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/SecondLevelNodeViewBinder.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/SecondLevelNodeViewBinder.java
@@ -17,8 +17,6 @@ import ru.volgorobot.vrcatalog.model.SecondLevelModel;
 public class SecondLevelNodeViewBinder extends BaseNodeViewBinder implements MainContract.ViewBinder {
     TextView textView;
     ImageView imageView;
-    RelativeLayout layout;
-    private MainContract.MainActivityView mView;
     MainContract.LevelLoaderPresenter viewBinderPresenter;
 
 
@@ -26,8 +24,6 @@ public class SecondLevelNodeViewBinder extends BaseNodeViewBinder implements Mai
         super(itemView);
         textView = (TextView) itemView.findViewById(R.id.node_name_view);
         imageView = (ImageView) itemView.findViewById(R.id.arrow_img);
-        layout = itemView.findViewById(R.id.parent_node_container_2);
-        this.mView = mView;
         viewBinderPresenter = new ViewBinderPresenter(mView, this, context);
     }
 
@@ -40,13 +36,6 @@ public class SecondLevelNodeViewBinder extends BaseNodeViewBinder implements Mai
     public void bindView(final TreeNode treeNode) {
         textView.setText(treeNode.getValue().toString());
         imageView.setRotation(treeNode.isExpanded() ? 90 : 0);
-        int index = mView.incTreeNodeIndex();
-        treeNode.setIndex(index);
-        if(index % 2 == 1) {
-            layout.setBackgroundColor(Color.parseColor("#FFFFFF"));
-        } else {
-            layout.setBackgroundColor(Color.parseColor("#BABABA"));
-        }
     }
 
     @Override
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/ThirdLevelNodeViewBinder.java b/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/ThirdLevelNodeViewBinder.java
index 6d39968..0c7529a 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/ThirdLevelNodeViewBinder.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/ThirdLevelNodeViewBinder.java
@@ -15,16 +15,12 @@ import ru.volgorobot.vrcatalog.model.ThirdLevelModel;
 
 public class ThirdLevelNodeViewBinder extends BaseNodeViewBinder implements MainContract.ViewBinder {
     TextView textView;
-    RelativeLayout layout;
-    private MainContract.MainActivityView mView;
     MainContract.LevelLoaderPresenter viewBinderPresenter;
 
     public ThirdLevelNodeViewBinder(View itemView, Context context, MainContract.MainActivityView mView) {
         super(itemView);
         viewBinderPresenter = new ViewBinderPresenter(mView, this, context);
         textView = itemView.findViewById(R.id.node_name_view);
-        layout = itemView.findViewById(R.id.parent_node_container_3);
-        this.mView = mView;
     }
 
     @Override
@@ -35,13 +31,6 @@ public class ThirdLevelNodeViewBinder extends BaseNodeViewBinder implements Main
     @Override
     public void bindView(final TreeNode treeNode) {
         textView.setText(treeNode.getValue().toString());
-        int index = mView.incTreeNodeIndex();
-        treeNode.setIndex(index);
-        if(index % 2 == 1) {
-            layout.setBackgroundColor(Color.parseColor("#FFFFFF"));
-        } else {
-            layout.setBackgroundColor(Color.parseColor("#BABABA"));
-        }
     }
 
     @Override
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/presenters/ViewBinderPresenter.java b/app/src/main/java/ru/volgorobot/vrcatalog/presenters/ViewBinderPresenter.java
index 0c26546..a4a08e2 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/presenters/ViewBinderPresenter.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/presenters/ViewBinderPresenter.java
@@ -32,7 +32,7 @@ public class ViewBinderPresenter implements MainContract.LevelLoaderPresenter {
 
     @Override
     public void fetchSecondLevel(FirstLevelModel firstLevelModel, TreeNode treeNode) {
-        new AsyncTask<FirstLevelModel, Void, ResultWithErrorCode<ArrayList<SecondLevelModel>>>() {
+        new AsyncTask<FirstLevelModel, Void, ResultWithErrorCode<ArrayList<TreeNode>>>() {
             @Override
             protected void onPreExecute() {
                 super.onPreExecute();
@@ -40,31 +40,32 @@ public class ViewBinderPresenter implements MainContract.LevelLoaderPresenter {
             }
 
             @Override
-            protected ResultWithErrorCode<ArrayList<SecondLevelModel>> doInBackground(FirstLevelModel... firstLevelModel) {
+            protected ResultWithErrorCode<ArrayList<TreeNode>> doInBackground(FirstLevelModel... firstLevelModel) {
                 ArrayList<SecondLevelModel> secondLevelModels = null;
+                ArrayList<TreeNode> treeNodes = new ArrayList<>();
                 try {
                     secondLevelModels = coreModel.fetchSecondLevelByParentID(firstLevelModel[0].getID());
                 } catch (NetworkErrorException networkErrorException) {
-                    return new ResultWithErrorCode<>(secondLevelModels, networkErrorException.getErrorCode());
+                    return new ResultWithErrorCode<>(null, networkErrorException.getErrorCode());
                 } catch (NullPointerException nullPointerException) {
-                    return new ResultWithErrorCode<>(secondLevelModels, 3);
+                    return new ResultWithErrorCode<>(null, 3);
                 }
 
-                return new ResultWithErrorCode<>(secondLevelModels, 0);
+                for (int i = 0; i < secondLevelModels.size(); i++) {
+                    TreeNode treeNode = new TreeNode(secondLevelModels.get(i));
+                    treeNode.setLevel(1);
+                    treeNodes.add(treeNode);
+                }
+
+                return new ResultWithErrorCode<>(treeNodes, 0);
             }
 
             @Override
-            protected void onPostExecute(ResultWithErrorCode<ArrayList<SecondLevelModel>> result) {
+            protected void onPostExecute(ResultWithErrorCode<ArrayList<TreeNode>> result) {
                 super.onPostExecute(result);
                 switch (result.getErrorCode()) {
                     case 0: {
-                        ArrayList<TreeNode> treeNodes = new ArrayList<>();
-                        for (int i = 0; i < result.getData().size(); i++) {
-                            TreeNode treeNode1 = new TreeNode(result.getData().get(i));
-                            treeNode1.setLevel(1);
-                            treeNodes.add(treeNode1);
-                        }
-                        treeNode.setChildren(treeNodes);
+                        treeNode.setChildren(result.getData());
                         mView.refreshTree();
                         viewBinder.rotateImageView();
                         break;
@@ -89,7 +90,7 @@ public class ViewBinderPresenter implements MainContract.LevelLoaderPresenter {
 
     @Override
     public void fetchThirdLevel(SecondLevelModel secondLevelModel, TreeNode treeNode) {
-        new AsyncTask<SecondLevelModel, Void, ResultWithErrorCode<ArrayList<ThirdLevelModel>>>() {
+        new AsyncTask<SecondLevelModel, Void, ResultWithErrorCode<ArrayList<TreeNode>>>() {
             @Override
             protected void onPreExecute() {
                 super.onPreExecute();
@@ -97,30 +98,32 @@ public class ViewBinderPresenter implements MainContract.LevelLoaderPresenter {
             }
 
             @Override
-            protected ResultWithErrorCode<ArrayList<ThirdLevelModel>> doInBackground(SecondLevelModel... secondLevelModel) {
+            protected ResultWithErrorCode<ArrayList<TreeNode>> doInBackground(SecondLevelModel... secondLevelModel) {
                 ArrayList<ThirdLevelModel> thirdLevelModels = null;
+                ArrayList<TreeNode> treeNodes = new ArrayList<>();
                 try {
                     thirdLevelModels = coreModel.fetchThirdLevelByParentID(secondLevelModel[0].getID());
                 } catch (NetworkErrorException networkErrorException) {
-                    return new ResultWithErrorCode<>(thirdLevelModels, networkErrorException.getErrorCode());
+                    return new ResultWithErrorCode<>(null, networkErrorException.getErrorCode());
                 } catch (NullPointerException nullPointerException) {
-                    return new ResultWithErrorCode<>(thirdLevelModels, 3);
+                    return new ResultWithErrorCode<>(null, 3);
                 }
-                return new ResultWithErrorCode<>(thirdLevelModels, 0);
+
+                for (int i = 0; i < thirdLevelModels.size(); i++) {
+                    TreeNode treeNode1 = new TreeNode(thirdLevelModels.get(i));
+                    treeNode1.setLevel(2);
+                    treeNodes.add(treeNode1);
+                }
+
+                return new ResultWithErrorCode<>(treeNodes, 0);
             }
 
             @Override
-            protected void onPostExecute(ResultWithErrorCode<ArrayList<ThirdLevelModel>> result) {
+            protected void onPostExecute(ResultWithErrorCode<ArrayList<TreeNode>> result) {
                 super.onPostExecute(result);
                 switch (result.getErrorCode()) {
                     case 0: {
-                        ArrayList<TreeNode> treeNodes = new ArrayList<>();
-                        for (int i = 0; i < result.getData().size(); i++) {
-                            TreeNode treeNode1 = new TreeNode(result.getData().get(i));
-                            treeNode1.setLevel(2);
-                            treeNodes.add(treeNode1);
-                        }
-                        treeNode.setChildren(treeNodes);
+                        treeNode.setChildren(result.getData());
                         mView.refreshTree();
                         viewBinder.rotateImageView();
                         break;
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/searchNodeViewBinders/FirstLevelNodeViewBinder.java b/app/src/main/java/ru/volgorobot/vrcatalog/searchNodeViewBinders/FirstLevelNodeViewBinder.java
index 2f4000c..86acbac 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/searchNodeViewBinders/FirstLevelNodeViewBinder.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/searchNodeViewBinders/FirstLevelNodeViewBinder.java
@@ -14,15 +14,11 @@ import ru.volgorobot.vrcatalog.R;
 public class FirstLevelNodeViewBinder extends BaseNodeViewBinder {
     TextView textView;
     ImageView imageView;
-    RelativeLayout layout;
-    MainContract.MainActivityView mView;
 
     public FirstLevelNodeViewBinder(View itemView, MainContract.MainActivityView mView) {
         super(itemView);
         textView = (TextView) itemView.findViewById(R.id.node_name_view);
         imageView = (ImageView) itemView.findViewById(R.id.arrow_img);
-        layout = itemView.findViewById(R.id.parent_node_container_1);
-        this.mView = mView;
     }
 
     @Override
@@ -34,13 +30,6 @@ public class FirstLevelNodeViewBinder extends BaseNodeViewBinder {
     public void bindView(TreeNode treeNode) {
         textView.setText(treeNode.getValue().toString());
         imageView.setRotation(treeNode.isExpanded() ? 90 : 0);
-        int index = mView.incTreeNodeIndex();
-        treeNode.setIndex(index);
-        if(index % 2 == 1) {
-            layout.setBackgroundColor(Color.parseColor("#FFFFFF"));
-        } else {
-            layout.setBackgroundColor(Color.parseColor("#BABABA"));
-        }
     }
 
     @Override
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/searchNodeViewBinders/SecondLevelNodeViewBinder.java b/app/src/main/java/ru/volgorobot/vrcatalog/searchNodeViewBinders/SecondLevelNodeViewBinder.java
index ebdf541..b474415 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/searchNodeViewBinders/SecondLevelNodeViewBinder.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/searchNodeViewBinders/SecondLevelNodeViewBinder.java
@@ -14,15 +14,11 @@ import ru.volgorobot.vrcatalog.R;
 public class SecondLevelNodeViewBinder extends BaseNodeViewBinder {
     TextView textView;
     ImageView imageView;
-    RelativeLayout layout;
-    MainContract.MainActivityView mView;
 
     public SecondLevelNodeViewBinder(View itemView, MainContract.MainActivityView mView) {
         super(itemView);
         textView = (TextView) itemView.findViewById(R.id.node_name_view);
         imageView = (ImageView) itemView.findViewById(R.id.arrow_img);
-        layout = itemView.findViewById(R.id.parent_node_container_2);
-        this.mView = mView;
     }
 
     @Override
@@ -34,13 +30,6 @@ public class SecondLevelNodeViewBinder extends BaseNodeViewBinder {
     public void bindView(TreeNode treeNode) {
         textView.setText(treeNode.getValue().toString());
         imageView.setRotation(treeNode.isExpanded() ? 90 : 0);
-        int index = mView.incTreeNodeIndex();
-        treeNode.setIndex(index);
-        if(index % 2 == 1) {
-            layout.setBackgroundColor(Color.parseColor("#FFFFFF"));
-        } else {
-            layout.setBackgroundColor(Color.parseColor("#BABABA"));
-        }
     }
 
     @Override
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/view/MainActivity.java b/app/src/main/java/ru/volgorobot/vrcatalog/view/MainActivity.java
index 46e9c17..6095e37 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/view/MainActivity.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/view/MainActivity.java
@@ -45,7 +45,6 @@ public class MainActivity extends AppCompatActivity
     private ImageView mConnectionErrorImageView;
     private ViewGroup mTreeViewContainer;
     private TextView mErrorTextView;
-    private int treeNodeIndex;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -125,7 +124,6 @@ public class MainActivity extends AppCompatActivity
 
     @Override
     public void onRefresh() {
-        treeNodeIndex = 0;
         mConnectionErrorImageView.setVisibility(View.INVISIBLE);
         mErrorTextView.setVisibility(View.INVISIBLE);
         mTreeViewContainer.setVisibility(View.VISIBLE);
@@ -207,11 +205,6 @@ public class MainActivity extends AppCompatActivity
         search.setQueryHint("Имя детали");
         return true;
     }
-
-    @Override
-    public int incTreeNodeIndex() {
-        return treeNodeIndex++;
-    }
 }
 
 
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/view/SearchableActivity.java b/app/src/main/java/ru/volgorobot/vrcatalog/view/SearchableActivity.java
index d1c3697..f411fcd 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/view/SearchableActivity.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/view/SearchableActivity.java
@@ -35,7 +35,6 @@ public class SearchableActivity extends AppCompatActivity implements MainContrac
     private ImageView mConnectionErrorImageView;
     private NestedScrollView mTreeViewContainer;
     private TextView mErrorTextView;
-    private int treeNodeIndex;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -148,9 +147,4 @@ public class SearchableActivity extends AppCompatActivity implements MainContrac
         }
         return super.onOptionsItemSelected(item);
     }
-
-    @Override
-    public int incTreeNodeIndex() {
-        return treeNodeIndex++;
-    }
 }