Nightfall of firelight

We live atop a small depression against a hill side. The light filtering through the privacy glass as I entered the darkened room was backlit as from a fire. I stepped onto the back porch and marveled at the sky's colors. On the back side of the hill the setting sun was out of view but the clouds overhead in the southern sky reflected the flames of the sinking sun. Looking from south to east the sky changed to a deepening blue. The wisps of clouds were like smoke in form and color. The trees' silhouettes hinted at the approaching nightfall. Within minutes the colors faded and disappeared into the darkness.