Private Sub Buttons_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs)
Dim btn As Button = sender
btn.BackColor = Color.Red
End Sub
Private Sub Buttons_MouseUp(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs)
Dim btn As Button = sender
btn.BackColor = SystemColors.Control
End Sub