This can be stated in active form. AT: "those who grew up wearing scarlet clothing" or "those who wore scarlet clothing when they were growing up" (See: [[rc://en/ta/man/translate/figs-activepassive]])
Here this phrase is a metonym for luxurious, expensive, and comfortable clothing, at least some of which was probably scarlet. AT: "luxurious clothing" (See: [[:en:ta:vol2:translate:figs-metonymy]])