Capellini with Mussels Clams in Rich Saffron Broth Seafood Capellini

Name: Capellini with Mussels & Clams in Rich Saffron Broth (Seafood Capellini)
Ingredients: 1 pinch saffron; 2 cups seafood or chicken broth; 1 tablespoon butter; 1 shallot, minced; 2 teaspoons tomato paste or 1 grated roma tomato; 18 clams, scrubbed; 18 mussels, scrubbed and beards removed; 1/3 cup crème fraiche; 2 ounces Capellini, prepared following package instructions