"Miffy eats the rainbow!" - A colorful modeling- and reward-based intervention to increase willingness to taste fruit and vegetables in 3-7-year-old children.

Diets rich in fruit and vegetables (F&Vs) improve cognitive functioning and reduce the risk of non-communicable diseases in children. Nevertheless, 59% of Dutch children do not meet recommended intake levels. Given the importance of color in children's food choices, the concept of "eat the rainbow" presents a promising approach.