Alcohol is a carbohydrate
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artichikin
Since ethanol is, strictly, a carbohydrate - C2H5OH - it might be a good idea, and easy to implement, to classify it in your pie chart as a carbohydrate and colour it pale blue instead of yellow, thereby contrasting it with the other darker blue regular carbs. Perhaps indigestible carbs might be colored a third shade of blue, but I realize this would be much more complicated to change.