How to customize the tab strip color of auto hide tab in WinForms Docking Manager?

//left
foreach (AHTabPage Page in DockingManager1.AutoHiddenTabControlLeft.TabPages)
{
    //'''colore del font
    Page.TabForeColor = Color.Red;
    //'''backcolor del tab
    Page.TabBackColor = Color.SkyBlue;
    //'''backcolor del contenitore dei tab
    Page.Parent.BackColor = Color.DarkBlue;
}
//'''right.
foreach (AHTabPage Page in DockingManager1.AutoHiddenTabControlRight.TabPages)
{
    Page.TabForeColor = Color.DarkGoldenrod;
    Page.TabBackColor = Color.SkyBlue;
    Page.Parent.BackColor = Color.DarkBlue;
}
//'''top.
foreach (AHTabPage Page in DockingManager1.AutoHiddenTabControlTop.TabPages)
{
    Page.TabForeColor = Color.Yellow;
    Page.TabBackColor = Color.SkyBlue;
    Page.Parent.BackColor = Color.DarkBlue;
}
//'''bottom.
foreach (AHTabPage Page in DockingManager1.AutoHiddenTabControlBottom.TabPages)
{
    Page.TabForeColor = Color.Chocolate;
    Page.TabBackColor = Color.SkyBlue;
    Page.Parent.BackColor = Color.DarkBlue;
}
//'''tabbed.
if (DockingManager1.IsTabbed(arg.Controls[0]))
{
    DockHost dh = (DockHost)(arg.Controls[0].Parent);
    DockHostController dhc = (DockHostController)dh.InternalController;
    DockTabController dtc = (DockTabController)dhc.ParentController;
    dtc.TabControl.TabPanelBackColor = Color.FromArgb(213, 220, 226);
    //Accessing the Internal TabControl .Using this, You could set colors same as how you are setting colors for a TabControl.
    Syncfusion.Windows.Forms.Tools.DockTabControl docktab = (DockTabControl)dtc.TabControl;
docktab.ForeColor = Color.DarkBlue;
    //Setting the color for the selected Tab.
    docktab.ActiveTabColor = Color.SkyBlue;
    //Setting the Color for Inactive tab
    docktab.InactiveTabColor = Color.DarkBlue;
}

''''left.
For Each Page As AHTabPage In DockingManager1.AutoHiddenTabControlLeft.TabPages
    ''''colore del font
    Page.TabForeColor = Color.Red
    ''''backcolor del tab
    Page.TabBackColor = Color.SkyBlue
    ''''backcolor del contenitore dei tab
    Page.Parent.BackColor = Color.DarkBlue
Next
''''right.
For Each Page As AHTabPage In DockingManager1.AutoHiddenTabControlRight.TabPages
    Page.TabForeColor = Color.DarkGoldenrod
    Page.TabBackColor = Color.SkyBlue
    Page.Parent.BackColor = Color.DarkBlue
Next
''''top.
For Each Page As AHTabPage In DockingManager1.AutoHiddenTabControlTop.TabPages
    Page.TabForeColor = Color.Yellow
    Page.TabBackColor = Color.SkyBlue
    Page.Parent.BackColor = Color.DarkBlue
Next
''''bottom.
For Each Page As AHTabPage In DockingManager1.AutoHiddenTabControlBottom.TabPages
    Page.TabForeColor = Color.Chocolate
    Page.TabBackColor = Color.SkyBlue
    Page.Parent.BackColor = Color.DarkBlue
Next
''''tabbed.
If DockingManager1.IsTabbed(arg.Controls(0)) Then
    Dim dh As DockHost = CType(arg.Controls(0).Parent, DockHost)
    Dim dhc As DockHostController = CType(dh.InternalController, DockHostController)
    Dim dtc As DockTabController = CType(dhc.ParentController, DockTabController)
    'dtc.TabControl.TabStyle = GetType(Syncfusion.Windows.Forms.Tools.OneNoteStyleRenderer)
    dtc.TabControl.TabPanelBackColor = Color.FromArgb(213, 220, 226)
    'Accessing the Internal TabControl .Using this, You could set colors same as how you are setting colors for a TabControl.
    Dim docktab As Syncfusion.Windows.Forms.Tools.DockTabControl = CType(dtc.TabControl, DockTabControl)
    docktab.ForeColor = Color.DarkBlue
    'Setting the color for the selected Tab.
    docktab.ActiveTabColor = Color.SkyBlue
    'Setting the Color for Inactive tab
    docktab.InactiveTabColor = Color.DarkBlue
End If