The most outstanding, jaw dropping extreme red throated S. flava variants I've ever seen anywhere on this planet are from the Eastern Alabama population. We didn't get to see these plants in their prime, but you can tell based on these old pitchers that this is something extraordinary: the interior of the trap is bright red and the color extends up the lid a bit more than your regular rugelii normally does:
I think this might be a different clone, but very similar idea:
We also found some cut throat "leucophyllas":
Hard to tell from this photo, but the lid on this on