Floor plan tube house L-shape triangular plot including oak tree

Why not. Everything from light gray to anthracite fits.

If the window frames are gray, I would take that shade

Is it true that with a fairly dark color there is an increased risk of cracking?

no idea. The only house that has a really dark accent has only been plastered for a year. We have light mouse gray

So I think a light gray plaster and anthracite-colored window frames are really not acceptable. We have some houses here with plaster facades in a light gray and dark window frames. That looks really awful. If anything, dark and dark or a dark anthracite for the facade and wood colors for the frames. But presumably, like everything, it’s also a matter of taste.

I had feared that light gray plaster and anthracite windows would not work

I feared that light gray plaster and anthracite windows wouldn’t work

There is, after all, exactly one light gray.