Change background color of MDIParent Form in VB.Net

#Region "Change Background Color of MDIParent : bgcolor()"
    'to change the background color of mdiparent
    'for more : http://acomputerengineer.wordpress.com

    Private Sub bgColor()
    Dim child As Control
    For Each child In Me.Controls
        If TypeOf child Is MdiClient Then
            child.BackColor = Color.CadetBlue
        Exit For
        End If
    Next
    child = Nothing
    End Sub
#End Region