Steinbeck typically describes the setting in terms of browns, greys, and reds. These colors create a mood of despair, isolation, and sadness. Especially because it is showing that the land is not fertile, it cannot grow lush, green plants, the colors also represent death and the inability to prosper.
The mention of death is always grim and they also mention losing faith, Which could mean they are also losing themselves. (Im not sure since the story wasn't provided). Hope this helps!
