I know this is a long shot, but Carnivorous Plant Connection used to sell and complex Sarracencia, which they called unnamed hybrid #2. It looked similar to an alata x flava with cuprea colors except it was covered in splotches of bright yellow-green, which were not fenestrations. If anyone happens to have one of this I would be interested and have plenty of Sarracenia and various companion plants to trade. Just hit me up.