With grapefruit, the major difference indicated by the color of the fruit flesh is nutritional: the pink or red varieties have not only more pigmentation, but also more vitamins than white grapefruit. This difference, however, has no impact on flavor. The flesh of the Grapefruit is sweet and juicy with a sour cherry aroma. Valued for their juice and their fresh flesh, their unique balance of sweetness and tang are what make grapefruit unique. Since they contain no fat, no cholesterol, and no sodium and are rich in vitamins A and C, they are often considered an excellent choice for those who are dieting.