enter image description here

I am using Delphi 10.2 and macos sdk 10.13. I want the app to be filled with colour. How do I do it as on the example picture above?

I this code but not work prefectly:

unit Unit7;

interface

uses
System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,
FMX.Types, FMX.Controls, FMX.Forms, FMX.Graphics, FMX.Dialogs;

type
TForm7 = class(TForm)
procedure FormCreate(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;

var
Form7: TForm7;

implementation

{$R *.fmx}

uses
Macapi.ObjectiveC, Macapi.CocoaTypes, Macapi.Foundation, Macapi.AppKit,
FMX.Platform, FMX.Platform.Mac;

type
TOCLocalAccess = class(TOCLocal);

function NSWindowOfForm(Form: TCommonCustomForm): NSWindow;
var
Obj: TMacWindowHandle;
begin
Result := (WindowHandleToPlatform(Form.Handle).Wnd);
end;

procedure TForm7.FormCreate(Sender: TObject);
begin
NSWindowOfForm(self).setStyleMask(NSNoTitle);

NSWindowOfForm(self).setOpaque(False);
NSWindowOfForm(self).setMovableByWindowBackground(true);
NSWindowOfForm(self).setBackgroundColor(TNscolor.Wrap(TNscolor.OCClass.colorWithCalibratedWhite(1.0, 0.5)));
end;

end.