Is this correct and natural?

Emily looked out the window past a layer of soot that had painted itself on the pane. The city looked painfully insipid, its people dull and fake. The coffee mug in her hand was a pale gray and the coffee was tasteless. She closed the window, looking at the reflection of her apartment on the glass. Her place looked drab. Her life needed some color, some flavor. She strode to her room and began tossing her clothes in a blue suitcase. She decided she needed a trip to lift her spirits up.