Bicolor window durability

We are considering having bicolor windows installed. A colored foil is applied on the outside of the plastic windows. However, the question now arises for me: how durable is such a foil? What does it look like in 10, 20, ... years? Does the foil fade or even peel off in some places? Does anyone know if the foils used are any good, or is it better to save the money right away?

We had the same consideration. Originally, we wanted plastic windows that are white on the inside and anthracite gray on the outside. Initially, it was the additional cost of about €1500 that made it not worth it to us after all. Besides, we wondered if it wasn’t just a passing trend. White windows are always fine. Finally, a consultant from a window company told us that the dark window parts warp when the sun shines on them because they get much hotter. So if you really want windows with different colors, you should opt for the solution where the windows get an outer shell (if I’m expressing that correctly).

Thank you for the response. I hadn't thought about the possibility of the windows warping either. And whether it's just a current trend, we've also considered that. White combined with anthracite is just very fashionable right now. It would be about €1,400 extra for all the windows with us. But somehow, I'm increasingly moving away from that.

We felt exactly the same way. We also find white inside and anthracite outside stylish. For reasons of practicality, we decided on white. Today I spoke to someone who seems to know a lot about it; he asked me about the color, and when I told him we are choosing white inside and outside, he said that was a wise decision. Purely taste-wise, one can certainly have a different opinion.

...Besides, we wondered whether this is just a trend. White windows always work. After all, a consultant from a window company told us that the dark window parts warp when the sun shines on them because they get much hotter...

We have white on the inside and gray foil on the outside. How could it be otherwise
We were not informed about the warping or we did not inform ourselves or give it much thought. Now it is like that, and we are waiting to see if there is any truth to it.

I want to say something about the trend. Above it says: white always works.
That is not quite true. I'm not that old to judge very old windows, but I know windows from houses from the 50s, 60s, 70s,...
I want to say that originally there were natural-colored wooden windows before plastic was invented for windows. White plastic: from the 90s, it always worked from then on, was modern and new, but not necessarily chic. Modern because new. It was good, cheap, practical. And it remains so to this day.
Those who cared about quality kept their glazed wooden windows or built their houses with wooden windows.
That still applies today. White plastic windows are, I don’t want to offend anyone, cheap and done! If I didn’t have a white house, I would have those windows too.
But modern? They are not modern and chic.
And after 10 years, they look sharp too, let’s be honest — either colored and warped or white and sharp?
Basically, plastic becomes brittle over time. That’s why they eventually look sharp. Maybe the foil helps against brittleness? That would be worth a study.

Why "schnittig"?!?