Red Delicious
The Red Delicious is a clone of apple cultigen, now comprising more than 50 cultivars, first recognized in Madison County, Iowa, in 1880. According to the US Apple Association website, it is one of the fifteen most popular apple cultivars in the United States.
Bicolored apple
It turned out that bicolored apples are more popular than monocolored ones; however, there is no difference in preference between apples that are red and green or red and yellow. For example, a combination of red and yellow was associated with such terms as sweetness, freshness, juiciness, naturalness, and harmony. In contrast, they associated a full dark red color with mealiness and judged them as artificial and unnatural.