Mine are:
Red: Tomatoes - they spark debate over their name pronunciation, and they are the main ingredient in my favourite type of smoothie: ketchup
Orange: Pumpkin - which other fruit has a spice season named after it?
Yellow: Corn - it's corn.
Green: Cucumber - it's light and refreshing and goes well with so many other fruits.
Blue: Yeah you're right, it's blueberries.
Purple: Aubergine, the best of all the berry family.
Pink: Rhubarb