Pitcher Plant (Nepenthes ventrata)

I saved this pitcher some time ago from a certain death due to neglect at the Passion fruit canopy. I cut off all the dead and dying stems and pitchers and left the entire pot hanging at a new area in the fruit trees area where I built the hanging pot frame. I just kept watering the pot for a couple of months. Slowly and surely I see new stems growing and with them new pitchers too and these pitchers are red due to the sunlight that they are getting from this spot. I also tried propagating the plant using stem cuttings and these are also pitchering in my home. However the pitchers in my bright balcony are green in color and lack the redness that I see in the pitchers in the CG.