I think the green top looks better with grey Ella. but i kept the Hush grey ones anyway. I liked those better with the wide tops because they are thicker and could be worn on their own with them I thought.
The M&S ones i think are better with a longer top/ dress...(I am always worried ( seeing it so often on people and really hating it ) about knickers showing through on thin leggings .. Perhaps though I just live in an unstylish place!!