That Drachenblut looks like it lost the red I am used to see, very interesting. I am saying this because I have it too and for me it stayed red all time of the year, even with direct sun with 90-95F temp measured at shade (as in official temperature, as directly in the sun it way hotter), which I consider very high temperatures for sempervivum, but that is how last summer was so that was my experience. This year so far does not seem to have such hot temps.
How much direct sun these specimens had? They do look like they always had humid soil and direct sun was not too much present on their leaves.
I have for example Rita Jane and in one place pretty much stay a sort of green-blue, but in another place with the same amount of direct sun is more towards yellow and pink, more appealing I would say.
Same amount of hours of full sun, just different position, different angle, different humidity (one on the soil, one on concrete).
