I just read Warbreaker and noticed these flowers being mentioned and times saying how they dyed so perfectly. Then I was rereading some q and a with Brandon where someone asked if Biochromatic breaths could be stored in the earth from a dead body that lost it, and he said it is possible with the same thing as harvesting the nature of preservation and ruin. Which on Scadrial took the form of metal. So with these flowers clearly having some sort of more then natural investiture maybe they can be somehow used to gain breaths? is this maybe how Vasher has stayed alive? Utilising the Breaths stored in the earth such as these flowers that they only use as dyes? This is my first post but just wanted some opinions.