Neither of them ever get green. I recently moved them side by side to see if they might be the same over time. One labeled "darker" has a grayer cast to it, kind of like it had a very thin mist of black paint sprayed over it. The other does not have that. Both have similar shades of red, just one has that smokey darkness. They are from different sources. I like to do that sometime to verify I have the right plant, but this happened in this case by accident.
