Your face would turn purple when you are suffercating(choking,can not breath,lost of breath,or when oxygen is not travilling through your mouth into the respitory system).
Yes you can change youre face color. I can i can change it to Red,Purple, and a little green. Its funny to watch me turn my face purple at the lunch table.But anyway i hope i answered ur question.
You cant..........sorry
Type 1 and type 2 PFDs are designed to turn an unconscious person face up.
I think It would turn dark purple . Because well you can try it if you want to.
No poop can not turn purple, Unless you have Hyupustionseds, a rare case can turn your waste purple think your safe :) Unless you eat like 10 hole bottles of purple food colouring, then i would be worried :)
type 1
Ammonia gas would turn universal indicator paper blue or purple depending on the concentration of ammonia present.
Yes they do turn purple but i do not know why
Yes a Chamelions can turn purple
no i think
nope
orange juice