Night
Darkness is when survival is most risky for Jews. "...those murdering cowards come only at night," Alicia told her mother. Nighttime was also when many would take chances to sneak into fields to scrounge a few forgotten or perhaps rotted crops. Darkness is what surrounded the Jews when they were loaded on train cars. Bunkers were another common hiding place, dark and dirty.
Snow
The whiteness and purity of the snowfall echoed signs of Godliness despite all the atrocities taking place. In a destroyed city of ghettos, the fields were untouched with the freshly fallen snow.