Grate the zest from the orange. Add 1 teaspoon orange zest, lime juice, lime zest, onion, mint, and chile to the cranberries. Using a small sharp knife, cut the peel and white pith from the orange. Cut the orange in half, slice thinly crosswise, and then chop finely. Add to the cranberries. Mix gently. Season to taste with a little salt and pepper. Cover and refrigerate at least 1 hour before serving. (Can be prepared 3 days ahead.)