diff --git a/OptionsWindow/OptionModule.vb b/OptionsWindow/OptionModule.vb
index b221569..de96c14 100644
--- a/OptionsWindow/OptionModule.vb
+++ b/OptionsWindow/OptionModule.vb
@@ -34,6 +34,7 @@ Friend Module OptionModule
 
    Friend m_TopSceneBackground As Color3d
    Friend m_BotSceneBackground As Color3d
+   Friend m_GridColor As Color3d
    Friend m_DefMaterialColor As Color3d
 
    ' inizializzazione lettura variabili ad inizio programma
@@ -67,15 +68,18 @@ Friend Module OptionModule
       m_bNewMachiningIsLastOne = If(GetPrivateProfileInt(S_OPTIONS, K_NEWMACHININGISLASTONE, 0) <> 0, True, False)
       ' Inizializzo variabile che indica se usare script di disposizione
       m_bUseDispositionScript = If(GetPrivateProfileInt(S_OPTIONS, K_USEDISPOSITIONSCRIPT, 0) <> 0, True, False)
-      ' Inizializzo variabili colori di sfondo scena e materiale default
-      Dim DefColor As New Color3d(0, 0, 0)
-      GetPrivateProfileColor(S_GEOMDB, K_DEFAULTCOLOR, DefColor)
+      ' Inizializzo variabili colori di sfondo scena, griglia e materiale default
       Dim BackTopColor As New Color3d(192, 192, 192)
       GetPrivateProfileColor(S_SCENE, K_BACKTOP, BackTopColor)
       Dim BackBotColor As New Color3d(BackTopColor)
       GetPrivateProfileColor(S_SCENE, K_BACKBOTTOM, BackBotColor)
+      Dim DefColor As New Color3d(0, 0, 0)
+      GetPrivateProfileColor(S_GEOMDB, K_DEFAULTCOLOR, DefColor)
+      Dim GridColor As New Color3d(0, 0, 0)
+      GetPrivateProfileColor(S_GRID, K_MINLNCOLOR, GridColor)
       m_TopSceneBackground = BackTopColor
       m_BotSceneBackground = BackBotColor
+      m_GridColor = GridColor
       m_DefMaterialColor = DefColor
    End Sub
 
diff --git a/OptionsWindow/OptionWindowV.xaml b/OptionsWindow/OptionWindowV.xaml
index 39dff6f..1020df4 100644
--- a/OptionsWindow/OptionWindowV.xaml
+++ b/OptionsWindow/OptionWindowV.xaml
@@ -43,6 +43,13 @@
                        Command="{Binding BotSceneBackground_Command}"
                        Style="{StaticResource EgtCAM5_InputButton}"/>
             </UniformGrid>
+            <UniformGrid Columns="2"
+                         Margin="0,0,0,5">
+               <TextBlock Text="{Binding GridColorMsg}" VerticalAlignment="Center"/>
+               <Button Background="{Binding GridColor}"
+                       Command="{Binding GridColor_Command}"
+                       Style="{StaticResource EgtCAM5_InputButton}"/>
+            </UniformGrid>
             <UniformGrid Columns="2"
                          Margin="0,0,0,5">
                <TextBlock Text="{Binding DefMaterialColorMsg}" VerticalAlignment="Center"/>
@@ -130,7 +137,7 @@
             
             <Grid Margin="5,5,5,0">
                <Grid.ColumnDefinitions>
-                  <ColumnDefinition Width="1*"/>
+                  <ColumnDefinition Width="2*"/>
                   <ColumnDefinition Width="1*"/>
                </Grid.ColumnDefinitions>
                <Grid.RowDefinitions>
diff --git a/OptionsWindow/OptionWindowVM.vb b/OptionsWindow/OptionWindowVM.vb
index 1b8baed..b3b4151 100644
--- a/OptionsWindow/OptionWindowVM.vb
+++ b/OptionsWindow/OptionWindowVM.vb
@@ -136,18 +136,27 @@ Public Class OptionWindowVM
    Public ReadOnly Property BotSceneBackground As Brush
       Get
          Return New SolidColorBrush(Color.FromArgb(CByte(255),
-                                                   CByte(m_BotSceneBackground.R),
-                                                   CByte(m_BotSceneBackground.G),
-                                                   CByte(m_BotSceneBackground.B)))
+                                                   CByte(OptionModule.m_BotSceneBackground.R),
+                                                   CByte(OptionModule.m_BotSceneBackground.G),
+                                                   CByte(OptionModule.m_BotSceneBackground.B)))
+      End Get
+   End Property
+
+   Public ReadOnly Property GridColor As Brush
+      Get
+         Return New SolidColorBrush(Color.FromArgb(CByte(255),
+                                                   CByte(OptionModule.m_GridColor.R),
+                                                   CByte(OptionModule.m_GridColor.G),
+                                                   CByte(OptionModule.m_GridColor.B)))
       End Get
    End Property
 
    Public ReadOnly Property DefMaterialColor As Brush
       Get
          Return New SolidColorBrush(Color.FromArgb(CByte(255),
-                                                   CByte(m_DefMaterialColor.R),
-                                                   CByte(m_DefMaterialColor.G),
-                                                   CByte(m_DefMaterialColor.B)))
+                                                   CByte(OptionModule.m_DefMaterialColor.R),
+                                                   CByte(OptionModule.m_DefMaterialColor.G),
+                                                   CByte(OptionModule.m_DefMaterialColor.B)))
       End Get
    End Property
 
@@ -155,6 +164,7 @@ Public Class OptionWindowVM
    Private m_cmdCloseOptions As ICommand
    Private m_cmdTopSceneBackground As ICommand
    Private m_cmdBotSceneBackground As ICommand
+   Private m_cmdGridColor As ICommand
    Private m_cmdDefMaterialColor As ICommand
 
 #Region "Messages"
@@ -256,6 +266,12 @@ Public Class OptionWindowVM
       End Get
    End Property
 
+   Public ReadOnly Property GridColorMsg As String
+      Get
+         Return EgtMsg(MSG_OPTIONPAGE + 17)
+      End Get
+   End Property
+
    Public ReadOnly Property DefMaterialColorMsg As String
       Get
          Return EgtMsg(MSG_OPTIONPAGE + 12)
@@ -330,6 +346,42 @@ Public Class OptionWindowVM
 
 #End Region ' BotSceneBackground
 
+#Region "GridColor"
+
+   ''' <summary>
+   ''' Returns a command that remove the current selected machining.
+   ''' </summary>
+   Public ReadOnly Property GridColor_Command() As ICommand
+      Get
+         If m_cmdGridColor Is Nothing Then
+            m_cmdGridColor = New RelayCommand(AddressOf GridColorCmd)
+         End If
+         Return m_cmdGridColor
+      End Get
+   End Property
+
+   ''' <summary>
+   ''' Manage the MachiningDb closing.  This method is invoked by the CloseMachiningDbCommand.
+   ''' </summary>
+   Public Sub GridColorCmd()
+      ' Recupero colore da Ini
+      Dim GridColor As New Color3d(192, 192, 192)
+      GetPrivateProfileColor(S_GRID, K_MINLNCOLOR, GridColor)
+      ' Eseguo modifica con dialogo
+      If SelectColor(GridColor, GridColor) Then
+         OptionModule.m_GridColor = GridColor
+         IniFile.MinLnColor = GridColor
+         IniFile.MajLnColor = GridColor
+         EgtSetGridColor(IniFile.MinLnColor, IniFile.MajLnColor)
+         WritePrivateProfileColor(S_GRID, K_MINLNCOLOR, OptionModule.m_GridColor)
+         WritePrivateProfileColor(S_GRID, K_MAJLNCOLOR, OptionModule.m_GridColor)
+         EgtDraw()
+         NotifyPropertyChanged("GridColor")
+      End If
+   End Sub
+
+#End Region ' GridColor
+
 #Region "DefMaterialColor"
 
    ''' <summary>