David,
So far, all the N Gracilis seems to have a least two different colour pitcher. The most common colour is the green colour and chocolate colour(?).
No true red N Gracilis seen yet, only heavily sun burn pitcher found. The two colour pitcher seems to be quite common, I found them in Selangor, Melaka and Johor.
The stem and the leaves in the last few pictures are the ones that I think is not normal.
