It’s mid November. So, sunrise is quite late (at about 8). Therefore sunset is early (at about 5). Over the next 5 weeks the days will shrink further.
Additionally, the sky is overacted by a thick dark-grey layer of clouds and it’s raining very much. Most of the trees don’t have leaves anymore.
That’s, why I need some some colors. I hope you like this sunset as a reminder to the past summer.