Better climate and or dryer as well as patience I guess.
Anyway, thanks again for all pieces of advice, the strategy I outlined above worked well. It's been exceptionally hot here so seven days spent on the balcony daytime and in the drier, speed setting 1 during the nights, yielded dried Bhuts that aren't discolored. I made a salsa out of a small one according to a recipe I found and I really enjoyed it (except got a bit too carried away with the blender so it was more of a purée than a salsa), it tasted like summer with a lasting sting.