The band does look cool. And seeing your photo, I also got the same adapters from the Utica guy and did not notice until I put a new brown leather band on them that the top and bottom of the adapter were not the same polished SS look as the sides. Thought that perhaps mine were faulty, but yours looks the same - at least from the pictures.
BTW - do you find that the watch band slides back and forth on the adapter? Looks like there is quite a bit of space on either side.
I've been buying my adapters from Utica guy and just the ends facing outward are polished SS. So far no issues with sliding as you described. Are all of your black buttons facing up like the watch face when you insert your band? Also another tip, as you slide in your adapter/band insert it in part way until you get to the middle button then depress the button downward as you slide the rest of the way in. Some people have reported the middle button popping off and we think it's because of the stress on the button if slid without easing that button down first.
I have 5 more adapters coming next week from Utica guy (3 classic style and 2 spring). If I have any issues I'll mention it. But like you I was hoping the entire adapter was SS finish. Haven't heard anyone mentioning buying one. Probably cost related and most of it gets covered up.