Opacity adjustment of the panel background in Vb.net

Question

Hello. I am trying to make an application in VB.NET where it is necessary to adjust the opacity of just the background of some "panels" so that they are transparent but not invisible. Following example:

Answer 1

You can adjust opacity properties [alpha] in the color of the panel:

Dim Opacity As Int32 = 50                      ' valor em porcentagem
Me.Color = Color.White 
Panel1.Color = Color.FromArgb(50, Color.Black) 
Panel2.Color = Color.FromArgb(25, 100, 51, 62) ' opacidade-vermelho-verde-azul