Window frame white or anthracite?

I only find anthracite nice for aluminum. For PVC window frames, I would choose white.

where light is supposed to be reflected (at window frames), white is the most sensible color.

Of course, one can see it however they want, but I think: that IS the case!

Knows the decision of maybe 99% of all people. (...)

I do not question competence for fun.
Feel free to come by sometime, here in the new development area you are in the minority with white windows. Predominantly white or gray façades with anthracite windows...

It's no wonder either, because on the classic white façades white windows look like nothing at all.

We have white inside. In the old house, we had black inside and outside … but that has to match the house and furnishings. For the country house style, whether modern or traditional, that would be too daring and I recommend white inside. With a lot of clarity or extravagance, gray/black can also be chic inside.

I am not questioning competence for fun.

Neither am I. But I do have to question your reading comprehension right now ;-) Question OP: anthracite on the outside, but also inside? ... how did you decide? Answer from me: I know the decision of maybe 99% of all people This isn't about the color on the outside at all. Unless, with your answer, you mean that you have inspected all the houses inside as well in your new development area?

So far, it's only planning for us, but we have chosen DB703 for both the interior and exterior. However, aluminum windows, because the frames are much narrower here and with thicker plastic frames it can be "too much." I also like the dark windows, especially when they are large and fixed-glazed, as they frame the view outside to the garden like a picture frame.