Broccoli and cauliflower salad

Ingredients
½ head broccoli chopped into bite-sized florets
½ head cauliflower chopped into bite-size florets
½ cup red, yellow, green peppers
1 ½ cup mayonnaise
½ cup sour cream
1 cup cheddar cheese cubes
1 teaspoon whole grain mustard
1 tablespoon seven-color grill seasoning
¼ cup chopped fresh parsley