Hi Rodrigo -
I'm glad you're back on here! I have seen your videos, and watched with great enthusiasm for a couple reasons. First, I think the Brastemp machines are really interesting, as I always knew that there were South American machines similar to those made for the U.S. market but I had never seen one. Also, I think your 1975 Kenmores are really great; I grew up with a washer like that.
The thought of the white Roto-Flex being for a repair part is a very possible reason. It is costly to change colors when moving from color to color molding, so if white was already in the machinery to mold something else like one of the white agitators, then it is very possible that they made the replacements in white as well. Did you find this agitator in the states?
Thanks for the cool videos Rodrigo!
Gordon