foo{content:(red: "literal", transparent: "literal");content:("red": "quoted", transparent: "quoted");content:(red: "interpolated", transparent: "quoted")}bar{content:(red: "literal", transparent: "quoted", "red": "quoted");content:(red: "literal", transparent: "literal", red: "interpolated", transparent: "quoted");content:("red": "interpolated", transparent: "quoted", transparent: "quoted")}