The top picture is the pink that is seen before the sun goes down over the horizon.
The bottom picture is the gold color that is seen before the pink. After the gold comes the light yellow and after the pink, the color fades to gray.
Yesterday I got outside too late to see the colors and only say the gray sky and clouds just before it got dark.
When there are clouds in the sky, the colors show up so well.
It’s worth stopping for a few minutes and watch the sun go down.