transparent all control

Jeg er ved at lave en control hvor man kan se alle controls i gennem den, men bogstaverne bliver tykke, hvordan kan jeg undgå det?.

Kode:

Private Sub Form1_Paint(sender As Object, e As PaintEventArgs) Handles Me.Paint
        Dim bmp As New Bitmap(Label1.Width, Label1.Height)
        Dim grap As Graphics = Graphics.FromImage(bmp)
        Dim paintmet As MethodInfo = GetType(Label).GetMethod("OnPaint", BindingFlags.NonPublic Or BindingFlags.Instance)
        paintmet.Invoke(Label1, {New PaintEventArgs(grap, New Rectangle(0, 0, Label1.Width, Label1.Height))})
        e.Graphics.DrawImage(bmp, 0, 0)
    End Sub