My guess is:
Vegetal tanned leather (3 or 3.5mm), unboiled for the male armor, boiled for the female.
Dyed with cloth, and then acetone bleached using brush.
If I'm correct, after your kiwi dye, you'll end with a polish oilskin and the armors will look brighter and a little more brown.
(if I'm wrong, you're amazing at turning any material into leather :confused)