While cycling from work to the back sun, I noticed colored cloud edges with sunglasses. I first photographed a rainbow-covered visible covered with a gauze cloud, and then, with a second stop, about 10 minutes later, visible between the thicker clouds, which was no longer an arc.
Not in the exact opposite direction from the sun but still 90+ degrees, the horizontal clouds on the horizon were visibly pinker than the upper ones, but the light in the camera was disturbing.
The backlight was so intense that it was only at home that I saw better. Are there clouds of color or part of the perimeter? What could have reddened the clouds on the horizon? However, the sun was not yet setting (18:57).
I have adjusted the brightness of the dim (-10) down in the pictures of the first sats as well as in the picture of the horizon.