I find RAL7016 already okay for windows. What I can no longer stand are the additional anthracite-colored facade coatings, e.g. from window to window. That's why we decided on a beige. I think that the anthracite-colored windows actually do not stand out because a window (as long as the light inside is off) appears dark anyway. As rightly says, you can "hide" things with dark tones. This is definitely the case with RAL7016 windows on the exterior view. Conversely, the dark frames inside emphasize the window, so you look outside as if through a picture frame. Whether it will still be liked in 10 years, I do not know. But I also wanted a red front door, which my wife forbade me (of course then without beige coating).
We also intentionally made the plinth lighter than RAL7016. The underside of the roof is also in RAL7016, but only because white paint simply gets very dirty over time. We have noticed this several times in new housing developments.