We can see lots of different kinds of food in different colors on our dining tables.Doctors and our parents always ask us to eat lots of green vegetables，because they are healthy for us.It's also good for us to have food in other colors.For example （例如），we can have red food like tomatoes and carrots，yellow food like bananas，brown food like chocolate and orange food like oranges.Most people like to eat red food.
But what about blue food?
A food company（公司）has a test，the workers put the color blue in its candies （糖果）.Children like the color blue very much，so would they like the blue candies?The test finds that children don't like them at all.They still like red，green，brown，yellow and orange candies.
How many kinds of blue fruits or vegetables do you know?You can see little blue food in your life.People may think blue is not a good color and that it is not healthy to eat blue food.People find many blue plants are poisonous ， and many animals are afraid to eat them.This is why people don't often use blue when they make drinks，cakes and other food.
