During the fall, Darlingtonia californica (the cobra lily) can change colors from bright yellow to dark red, and mixtures in between. Sometimes, if stressed, the windows can change colors as well.
In the wild, we found a few individuals that under normal conditions consistently produces red windows! We searched the site carefully and only found maybe 2-3 plants that displayed this unique characteristic. I visited this same site in 2010 (?) and at that time, we thought the red windows might just be an environmental thing. However, upon seeing the plants again in 2013, the same individuals had red windows, which suggest this is a genetic characteristic. Fortunately, this population is doing well in the wild, and these unique red windowed plants will likely persist in situ beyond our lifetime because they're very hard to find :)
Photos taken 10/12/13:
Look at how incredible these clones are! Interestingly, The red doesn't color up all the windows
Notice plants in the background, under the exact same environmental conditions, do not produce red windows:
Nature is absolutely fantastic!
A different individual clone:
If these plants didn't already look so alien, the red windows helps make them look even more bizzare:
Side view:
This one has a "moustache" like tongue: