Dear kate is amazing this information i did know about this, and right now i know why the red color is the most common in christmas, it is provides from the amanitas that you show it is great color,
I read about this that in mexico some chaman eat this poysonous mushroom amanita and then he urine and give the other members of the tribu his urine for drink and they enjoy alucinogen power procces in the chaman urine.
Maybe it is true but every of normal literatura say that the mayorities amanita are poisonous.
Dear thanks for pass here and explain the amazing information of our origins of our celebratiins it is great contents.
Best regard @galberto
By the way i am an entusiastic of mushroom but only know in the forest pseudofistulina radicata as an endible mushroom