NSVisualEffectMaterialPopover

The material for a window’s titlebar.

The material used to indicate a selection.

The material for menus.

The material for the background of window sidebars.

The material for in-line header or footer views.

The material for the background of sheet windows.

The material for the background of opaque windows.

The material for the background of heads-up display (HUD) windows.

The material for the background of a full-screen modal interface.

The material for the background of a tool tip.

The material for the background of opaque content.

The material for under a window's background.

The material for the area behind the pages of a document.