That was INSANE. First time I see something like that.
One hour or so before sunset, the sky became overcast, many low and thick clouds came from North. Everything became grey, wind was very cold. I waited a moment still... Then, it was really dark, I thought the sunset was ended, I was ready to go... when I saw the sun, weirdly pink, coming down on the horizon... It lasted a few minutes.
The atmosphere was very strange.
I tried to do something as close to the reality as possible, editing is minor here, just a very soft blend to keep the real colors of the sun. It was that dark.
Maybe it's not very good as a picture (cause it's very dark) but I had to share that.