White cheddar cheese doesn't have any artificial or natural coloring added; whereas, orange cheddar contains an additional ingredient called Annatto. Annatto is a natural, reddish-orange food coloring that's made from the seeds of a certain tree that's commonly grown in South and Central America. It's added in order to give yellow cheddar cheese consistent color and appearance. Since white cheddar has no food coloring added, it's appearance and color will vary at different times of the year, depending on what type of grasses and forbs the dairy cows have been grazing.