I have the same feeling somewhat. Loving the white seats (have them for about 4,5 years now in my 2019 M3P), and was planning to order them again in my next config, but the combo with Ultra Red isn't that great as I thought. Like you said, too much going on, and the white seats distract from the awesome Ultra Red exterior. I saw a LR Ultra Red with white interior almost next to a with black interior, and the one with black was the better combo.
Still in doubt sometimes, because the white sport seats are looking great up close. But the door inlays are too big, and if you zoom out and get the Ultra Red in the same view, it makes less sense. I would take the white seats with every other exterior color.