Color items different if values are invalid

Please add the functionality to mark items as invalid and color those different.

Add property Appearance.Invalid to set colors for items that are marked as Invalid.

Add Boolean property Values[x].Invalid

procedure TForm1.AdvListEditor1ValueEditDone(Sender: TObject;
Value: TAdvListValue; var EditText: string; var Invalid: Boolean);
If NOT CorrectValue then
Invalid := True