Zuchetto Symbolism

Zuchetto2
There are three primary colors of zuchetto skull caps in the Roman Church - black, purple and red. These colors indicate rank within the Church hierarchy with priests wearing black, bishops wearing purple and cardinals in red. In addition, only the pope can wear a white zuchetto. It occurs to me there is a good possibility that these colors correspond to European elf folklore and three corresponding types of psychoactive mushrooms common across Europe.

As I posted a few months ago, the Amanita Muscaria mushroom (white/red) was likely associated with light elves, Psilocybe cyanescens (tan/white) with dark eleves and Psilocybe semilanceata (dark brown/purple) with black elves or dwarves (see link in comments). Could it be that this mushroom folklore corresponds to the color ranks of the Catholic zuchetto?

The red cardinal zuchetto would be the red Amanita muscaria cap while the Pope's special white cap might symbolize the white spots on the red Amanita. The purple bishop's cap would then be the purple Psilocybe semilanceata while the black priest's cap could be this or the tan Psilocybe cyanescens. In any case, it seems more than a little likely that the red and blue Liberty Caps commonly seen on yard gnomes have their equivalence in the Roman Church as bishop and cardinal zuchettos.