procedure TForm1.ListBox1DrawItem(Control: TWinControl; Index: Integer;
  Rect: TRect; State: TOwnerDrawState);
var
  myColor: TColor;
  myBrush: TBrush;
begin
  myBrush := TBrush.Create;
  with (Control as TListBox).Canvas do
  begin
    if not Odd(Index) then
      myColor := clSilver
    else
      myColor := clYellow;
    myBrush.Style := bsSolid;
    myBrush.Color := myColor;
    Windows.FillRect(handle, Rect, myBrush.handle);
    Brush.Style := bsClear;
    TextOut(Rect.Left, Rect.Top, (Control as TListBox).Items[Index]);
    myBrush.Free;
  end;
end;

procedure TForm1.ListBox1DrawItem(Control: TWinControl; Index: Integer;
  Rect: TRect; State: TOwnerDrawState);
begin
  with (Control as TListBox).Canvas do
  begin
    case Index of
      0:
        begin
          Font.Color := clBlue;
          Brush.Color := clYellow;
        end;
      1:
        begin
          Font.Color := clRed;
          Brush.Color := clLime;
        end;
      2:
        begin
          Font.Color := clGreen;
          Brush.Color := clFuchsia;
        end;
    end;
    FillRect(Rect);
    TextOut(Rect.Left, Rect.Top, (Control as TListBox).Items[Index]);
  end;
end;