Here is a list of fruits and vegetables in the different color groups.

Red

Apples - red
Beets
Cabbage - red
Cherries
Chili Pepper
Cranberries
Grapefruit - pink
Grapes - red
Onion - red
Peppers - red
Pomegranates
Potatoes - red
Radishes
Raspberries
Rhubarb
Strawberries
Tomatoes
Watermelon

Orange

Apricots
Butternut squash
Cantaloupe
Carrots
Grapefruit
Mangoes
Nectarines
Oranges
Papayas
Peaches
Peppers - Orange
Persimmons
Pumpkin
Rutabagas
Sweet potatoes
Tangerines

Yellow

Apples - yellow
Lemons
Pears - yellow
Pepper - yellow
Pineapple
Potato - yellow
Summer Squash - yellow
Sweet corn - yellow
Tomatoes - yellow
Watermelon - yellow
Winter Squash - yellow

Green

Apples - green
Artichokes
Arugula
Asparagus
Avocados
Green beans
Cabbage - Chinese
Cabbage - green
Celery
Cucumbers
Endive
Grapes - green
Honeydew melon
Kiwi
Leeks
Lettuce
Limes
Okra
Onions - green
Pears - green
Peas
Pepper - green
Zucchini

Dark Green

Broccoli
Brussels sprouts
Collard Greens
Kale
Romaine Lettuce
Turnip Greens
Sorrel
Spinach

Blue/Purple

Currants
Blackberries
Blueberries
Eggplant
Elderberries
Endive - purple
Grapes - purple
Figs
Juneberries
Peppers - purple
Plums
Potatoes - purple
Prunes
Raisins

White

Bananas
Cauliflower
Corn - white
Dates
Garlic
Ginger
Jicama
Kohlrabi
Mushrooms
Onions
Parsnips
Pears - brown
Potatoes - white
Shallot
Turnips