Is it normal for a freckle to change colors?

Possibly.: Sun exposure to freckles can darken the freckles, especially during summer months. However, since a freckle is technically a pigmented lesion of the skin, it is important to have your dermatologist check the freckle as it falls under the abcde criteria for moles and melanoma--assymetry, border irregularity, color change, diameter >>pencil eraser and evolving/changing.