Use the TransparentFrom and TransparentTo properties to define the transparent colors for the control. These properties have efect only if the Transparency property is True.  Use the Picture property to load a picture into the control. If the Picture property points to an icon, the BackColor property defines the control's background color. Use the same value for TransparentFrom and TransparentTo as BackColor property, if you need to define a non-regular window based on an icon.