diff --git a/StructureHelper/Windows/MainGraph/FormulaView.xaml b/StructureHelper/Windows/MainGraph/FormulaView.xaml
index c7d06b3..4fadf4b 100644
--- a/StructureHelper/Windows/MainGraph/FormulaView.xaml
+++ b/StructureHelper/Windows/MainGraph/FormulaView.xaml
@@ -149,14 +149,29 @@
                 <RowDefinition Height="30"/>
                 <RowDefinition Height="30"/>
             </Grid.RowDefinitions>
-            <TextBlock Grid.Row="0" 
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="*"/>
+                <ColumnDefinition Width="*"/>
+            </Grid.ColumnDefinitions>
+            <TextBlock  
+                       Grid.Row="0" 
                        Margin="5"
                        Text="Color:" 
                        VerticalAlignment="Center"/>
-            <ComboBox Grid.Row="1" 
-                      Margin="5"
-                      ItemsSource="{Binding Colors}"
-                      SelectedItem="{Binding CurrentColor}"/>
+            <Button Grid.Row="1"
+                    Grid.Column="1"
+                    Margin="5,5,5,5"
+                    Command="{Binding EditColorCommand}"
+                    Content="Press to change color">
+            </Button>
+            <Rectangle
+                    Grid.Row="1"
+                    Grid.Column="0"
+                    Margin="5,5,5,5">
+                <Rectangle.Fill>
+                    <SolidColorBrush Color="{Binding Color, UpdateSourceTrigger=PropertyChanged}"/>
+                </Rectangle.Fill>
+            </Rectangle>
         </Grid>
         <Button Grid.Row="7" Margin="5" Content="Save"
                 Command="{Binding SaveCommand}"
diff --git a/StructureHelper/Windows/MainGraph/FormulaViewModel.cs b/StructureHelper/Windows/MainGraph/FormulaViewModel.cs
index ffbff48..c049c84 100644
--- a/StructureHelper/Windows/MainGraph/FormulaViewModel.cs
+++ b/StructureHelper/Windows/MainGraph/FormulaViewModel.cs
@@ -2,6 +2,7 @@
 using StructureHelper.Infrastructure;
 using StructureHelperCommon.Infrastructures.Interfaces;
 using StructureHelperCommon.Models.Functions;
+using StructureHelperCommon.Services.ColorServices;
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
@@ -30,6 +31,7 @@ namespace StructureHelper.Windows.MainGraph
         public char LESS { get; } = '\u2264';
         public char X { get; } = 'x';
         private RelayCommand saveCommand;
+        private RelayCommand editColor;
         public int Step { get; set; }
         private double leftBound;
         public double LeftBound 
@@ -53,8 +55,11 @@ namespace StructureHelper.Windows.MainGraph
                 OnPropertyChanged(nameof(RightBound));
             }
         }
-        public Color CurrentColor { get; set; }
         public ObservableCollection<Color> Colors { get; set; }
+        public ICommand EditColorCommand
+        {
+            get => editColor ??= new RelayCommand(o => EditColor());
+        }
         public ICommand SaveCommand
         {
             get => saveCommand ??= new RelayCommand(o => Save(o));
@@ -107,6 +112,16 @@ namespace StructureHelper.Windows.MainGraph
                 description = value;
             }
         }
+        private Color color;
+        public Color Color
+        {
+            get => color;
+            set
+            {
+                color = value;
+                OnPropertyChanged(nameof(Color));
+            }
+        }
         private string limitText;
         public string LimitText 
         { 
@@ -125,7 +140,7 @@ namespace StructureHelper.Windows.MainGraph
             LeftBound = DEFAULT_LEFT_BOUND;
             RightBound = DEFAULT_RIGHT_BOUND;
             LimitText = $"x\u2208[{LeftBound};{RightBound}]";
-            CurrentColor = Brushes.AliceBlue.Color;
+            Color = Brushes.Red.Color;
         }
         public FormulaViewModel(FormulaFunction formulaFunction)
         {
@@ -136,7 +151,13 @@ namespace StructureHelper.Windows.MainGraph
             Description = Function.Description;
             LeftBound = Function.MinArg;
             RightBound = Function.MaxArg;
-            CurrentColor = Function.Color;
+            Color = Function.Color;
+        }
+        private void EditColor()
+        {
+            Color color = new Color();
+            ColorProcessor.EditColor(ref color);
+            Color = color;
         }
         private void Save(object parameter)
         {
@@ -149,6 +170,7 @@ namespace StructureHelper.Windows.MainGraph
             Function.IsUser = true;
             (Function as FormulaFunction).Step = Step;
             (Function as FormulaFunction).Formula = Formula;
+            Function.Color = Color;
             var window = parameter as Window;
             if (LeftBound > RightBound)
             {
diff --git a/StructureHelper/Windows/MainGraph/GraphView.xaml b/StructureHelper/Windows/MainGraph/GraphView.xaml
index b6196f1..0f389a2 100644
--- a/StructureHelper/Windows/MainGraph/GraphView.xaml
+++ b/StructureHelper/Windows/MainGraph/GraphView.xaml
@@ -63,7 +63,17 @@
             </ListView.GroupStyle>
             <ListView.ItemTemplate>
                 <DataTemplate>
-                    <TextBlock Text="{Binding Path=Name, UpdateSourceTrigger=PropertyChanged}"/>
+                    <StackPanel Orientation="Horizontal">
+                        <Rectangle
+                        Margin="1,1,1,1"
+                        Height="15"
+                        Width="30">
+                            <Rectangle.Fill>
+                                <SolidColorBrush Color="{Binding Path=Color, UpdateSourceTrigger=PropertyChanged}"/>
+                            </Rectangle.Fill>
+                        </Rectangle>
+                        <TextBlock Text="{Binding Path=Name, UpdateSourceTrigger=PropertyChanged}"/>
+                    </StackPanel>
                 </DataTemplate>
             </ListView.ItemTemplate>
         </ListView>
diff --git a/StructureHelper/Windows/MainGraph/TableView.xaml b/StructureHelper/Windows/MainGraph/TableView.xaml
index 8d227e1..58d5565 100644
--- a/StructureHelper/Windows/MainGraph/TableView.xaml
+++ b/StructureHelper/Windows/MainGraph/TableView.xaml
@@ -111,11 +111,29 @@
                 <RowDefinition Height="30"/>
                 <RowDefinition Height="30"/>
             </Grid.RowDefinitions>
-            <TextBlock Grid.Row="0" 
-                Margin="5"
-                Text="Color:" 
-                VerticalAlignment="Center"/>
-            <ComboBox Grid.Row="1" Text="{Binding Description}" Margin="5"/>
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="*"/>
+                <ColumnDefinition Width="*"/>
+            </Grid.ColumnDefinitions>
+            <TextBlock  
+                       Grid.Row="0" 
+                       Margin="5"
+                       Text="Color:" 
+                       VerticalAlignment="Center"/>
+            <Button Grid.Row="1"
+                    Grid.Column="1"
+                    Margin="5,5,5,5"
+                    Command="{Binding EditColorCommand}"
+                    Content="Press to change color">
+            </Button>
+            <Rectangle
+                    Grid.Row="1"
+                    Grid.Column="0"
+                    Margin="5,5,5,5">
+                <Rectangle.Fill>
+                    <SolidColorBrush Color="{Binding Color, UpdateSourceTrigger=PropertyChanged}"/>
+                </Rectangle.Fill>
+            </Rectangle>
         </Grid>
         <Button Grid.Row="6" Margin="5" Content="Save"
                 Command="{Binding SaveCommand}"
diff --git a/StructureHelper/Windows/MainGraph/TableViewModel.cs b/StructureHelper/Windows/MainGraph/TableViewModel.cs
index f8a772a..09d5883 100644
--- a/StructureHelper/Windows/MainGraph/TableViewModel.cs
+++ b/StructureHelper/Windows/MainGraph/TableViewModel.cs
@@ -2,6 +2,7 @@
 using StructureHelperCommon.Infrastructures.Interfaces;
 using StructureHelperCommon.Models.Functions;
 using StructureHelperCommon.Models.Shapes;
+using StructureHelperCommon.Services.ColorServices;
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
@@ -11,6 +12,7 @@ using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Input;
+using System.Windows.Media;
 
 namespace StructureHelper.Windows.MainGraph
 {
@@ -21,6 +23,11 @@ namespace StructureHelper.Windows.MainGraph
         private RelayCommand saveCommand;
         private RelayCommand addPointCommand;
         private RelayCommand deletePointCommand;
+        private RelayCommand editColor;
+        public ICommand EditColorCommand
+        {
+            get => editColor ??= new RelayCommand(o => EditColor());
+        }
         public ICommand SaveCommand
         {
             get => saveCommand ??= new RelayCommand(o => Save(o));
@@ -81,6 +88,16 @@ namespace StructureHelper.Windows.MainGraph
                 description = value;
             }
         }
+        private Color color;
+        public Color Color
+        {
+            get => color;
+            set
+            {
+                color = value;
+                OnPropertyChanged(nameof(Color));
+            }
+        }
         public TableViewModel()
         {
             Table = new ObservableCollection<GraphPoint>()
@@ -90,6 +107,7 @@ namespace StructureHelper.Windows.MainGraph
             };
             Name = DEFAULT_NAME;
             Description = DEFAULT_DESCRIPTION;
+            Color = Brushes.Red.Color;
         }
         public TableViewModel(TableFunction tableFunction)
         {
@@ -97,6 +115,13 @@ namespace StructureHelper.Windows.MainGraph
             Table = new ObservableCollection<GraphPoint>((Function as TableFunction).Table);
             Name = Function.Name;
             Description = Function.Description;
+            Color = Function.Color;
+        }
+        private void EditColor()
+        {
+            Color color = new Color();
+            ColorProcessor.EditColor(ref color);
+            Color = color;
         }
         private void Save(object parameter)
         {
@@ -108,6 +133,7 @@ namespace StructureHelper.Windows.MainGraph
             Function.Description = Description;
             Function.IsUser = true;
             (Function as TableFunction).Table = Table.OrderBy(x => x.X).ToList();
+            Function.Color = Color;
             var window = parameter as Window;
             window.DialogResult = true;
             window.Close();
diff --git a/StructureHelperCommon/Models/Functions/Decorator/LimYDecorator.cs b/StructureHelperCommon/Models/Functions/Decorator/LimYDecorator.cs
index 1ed9b8b..70d86de 100644
--- a/StructureHelperCommon/Models/Functions/Decorator/LimYDecorator.cs
+++ b/StructureHelperCommon/Models/Functions/Decorator/LimYDecorator.cs
@@ -30,7 +30,14 @@ namespace StructureHelperCommon.Models.Functions.Decorator
             {
                 return y;
             }
-            return 0;
+            else if (y <= downBound)
+            {
+                return downBound;
+            }
+            else
+            {
+                return upBound;
+            }
         }
         public override GraphSettings GetGraphSettings()
         {
diff --git a/StructureHelperCommon/Models/Functions/FormulaFunction.cs b/StructureHelperCommon/Models/Functions/FormulaFunction.cs
index 4a3c283..4bb43df 100644
--- a/StructureHelperCommon/Models/Functions/FormulaFunction.cs
+++ b/StructureHelperCommon/Models/Functions/FormulaFunction.cs
@@ -12,6 +12,7 @@ using System.Threading.Tasks;
 using System.Windows.Documents;
 using StructureHelperCommon.Services;
 using LiveCharts.Wpf;
+using StructureHelperCommon.Services.ColorServices;
 
 namespace StructureHelperCommon.Models.Functions
 {
@@ -36,6 +37,7 @@ namespace StructureHelperCommon.Models.Functions
 
         public FormulaFunction(bool isUser = false)
         {
+            Color = ColorProcessor.GetRandomColor();
             Type = FunctionType.FormulaFunction;
             if (isUser)
             {
diff --git a/StructureHelperCommon/Models/Functions/TableFunction.cs b/StructureHelperCommon/Models/Functions/TableFunction.cs
index 87d3269..c3a619b 100644
--- a/StructureHelperCommon/Models/Functions/TableFunction.cs
+++ b/StructureHelperCommon/Models/Functions/TableFunction.cs
@@ -10,6 +10,7 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using StructureHelperCommon.Services;
+using StructureHelperCommon.Services.ColorServices;
 
 namespace StructureHelperCommon.Models.Functions
 {
@@ -36,6 +37,7 @@ namespace StructureHelperCommon.Models.Functions
 
         public TableFunction(bool isUser = false)
         {
+            Color = ColorProcessor.GetRandomColor();
             Type = FunctionType.TableFunction;
             if (isUser)
             {
@@ -48,7 +50,6 @@ namespace StructureHelperCommon.Models.Functions
                 Group = GROUP_TYPE_1;
             }
         }
-
         public bool Check()
         {
             throw new NotImplementedException();
diff --git a/StructureHelperCommon/Services/GraphSettings.cs b/StructureHelperCommon/Services/GraphSettings.cs
index abbd8fd..e4ef243 100644
--- a/StructureHelperCommon/Services/GraphSettings.cs
+++ b/StructureHelperCommon/Services/GraphSettings.cs
@@ -40,8 +40,8 @@ namespace StructureHelperCommon.Services
                 _chartValues.Add(Math.Round(point.Y, 2));
             }
             _lineSeries.Values = _chartValues;
-            _lineSeries.Stroke = Brushes.Blue; //Заменить на поле Color
-            _lineSeries.Fill = Brushes.Transparent; //Заменить на поле Color
+            _lineSeries.Stroke = new SolidColorBrush(_strokeColor);
+            _lineSeries.Fill = Brushes.Transparent;
             _seriesCollection.Add(_lineSeries);
             return _seriesCollection;
         }