Well, here is something odd about sarracenia oreophila! If your s. oreophila gets a few hours of sun, it may show a few veins. However, if you increase the amount of sun the plant gets, the more color it takes on. Unlike s. flava, let's say, variation rubricorpora, which is a red tube, a plant that will redden up a little every day until it takes on the color red over a period of days in say 5 or 6 hours of sun per day. S. oreophila has a tendency to take on color according to the amount of sun it gets EACH day.
A plant given to me by Joe Mazrimas got 4 hours of sun a day and was all green. It got the same amount of sun day in and day out. Always it was green. Joe gave me a cutting of this plant toward the end of its growing season, and it stayed all green, though not anthocyanin free. (Red growing points!) The following year, living at my house, it was getting 12 hours of light per day. WHAM! Suddenly it veined up with beautiful red veins, looking very different from the environment it lived in. And quite beautiful!
Then, I got a clone from Ron Lane. (Clone 2, lightly veined) I found out from Ron it got 6 or 7 hours of sun. So, being the curious sort I am, I gave it 12 to 14 hours. Suddenly, it was very veined. Ron thought I had mislabeled the plant, but I told him what had happened. Ron gave his clone 2 more sun, and it turned into a wholly different plant, very veined, and GORGEOUS! Why the amount of sun makes this difference is unclear as other species (s. flava's, s. leucophylla's) take on their color gradually, getting more colorful every day until they reach the leaves lifespan end. S. oreophila will just look less veined with less sun (hours wise), while my s. flava var. rubricorpora get redder every day until they die, even with only 6 hours of sun. For BEST color with your s. oreophila, give it all the sun it can "eat". You just might be in for the shock of your life. S. oreophila is quite the showoff if given all you can give it!