On the way home from town today we saw this sunset but the camera did not do it justice.
Those 'V's that you see in the top of the yellow were all blue/grey shadows of the Rocky Mountains on the bottom of the clouds. This phenomena makes the Flat Earthers suicidal because they can't explain it with their model. The sun has to be lower than the clouds and the mountains to show these shadows.
The picture doesn't show the shadows very well, so you'll just have to take my word for it.