procedure TForm1.ListBoxItem1Paint(Sender: TObject; Canvas: TCanvas; const ARect: TRectF);
begin
  if (Sender as TListBoxItem).IsSelected then
  begin
    Canvas.Fill.Kind := TBrushKind.Solid;
    Canvas.Fill.Color := TAlphaColorRec.Blue;
    Canvas.FillRect(ARect, 0, 0, [], 1);

    Canvas.Fill.Kind := TBrushKind.Solid;
    Canvas.Fill.Color := TAlphaColorRec.White;
    Canvas.FillText(ARect, (Sender as TListBoxItem).Text, False, 1, [], TTextAlign.Leading, TTextAlign.Center);
  end
  else
  begin
    Canvas.Fill.Kind := TBrushKind.Solid;
    Canvas.Fill.Color := TAlphaColorRec.White;
    Canvas.FillRect(ARect, 0, 0, [], 1);

    Canvas.Fill.Color := TAlphaColorRec.Black;
    Canvas.Fill.Kind := TBrushKind.Solid;
    Canvas.FillText(ARect, (Sender as TListBoxItem).Text, False, 1, [], TTextAlign.Leading, TTextAlign.Center);
  end;
end;