This passage is from a short story, "Home", by Gwendolyn Brooks.
She knew, from the way they looked at her, that this had been a mistake. They did not want to cry.
But she felt that the little line of white, sometimes ridged with smoked purple, and all that cream-shot saffron would never drift across any western sky except that in back of this house. The rain would drum with as sweet a dullness nowhere but here. The birds on South Park were mechanical birds, no better than the poor caught canaries in those “rich” women’s sun parlors
Does "The rain would drum with as sweet a dullness nowhere but here" mean that the sound of rain anywhere but here is sad?
What is the meaning of "cream-shot saffron"? Is it just a metaphor? I don't know what is like "cream-shot saffron".