A chicken tikka masala, with its high calorie, fat and salt content, might carry a red logo, while a healthier version of the dish - without the creamy sauce - would score a green.
The scheme, which is being backed by the Government, follows research revealing many takeaway dishes contain more calories, salt and fat than the average adult should eat in a day.
In Liverpool, researchers found a Chinese meal of beef and green peppers in a black bean sauce served with fried rice contained 27.6g of salt - more than four times an adult's recommended daily intake of 6g.
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