Heat oil in a large nonstick skillet over medium-high heat. Add onion; sauté 2 minutes. Add bell peppers, crushed red pepper, salt, and garlic; sauté 4 minutes. Add tomatoes; cook 6 minutes or until liquid almost evaporates, stirring frequently.
Stir in shrimp, and cook 4 minutes or until shrimp are done, stirring frequently. Remove shrimp mixture from heat, and stir in coconut milk. Sprinkle with cilantro.