In medium saucepan, heat oil over medium-high heat. Add peppers and onion; cook 5 minutes or until soft, stirring occasionally. Add garlic; cook 1 minute or until fragrant, stirring frequently. Transfer pepper mixture to blender; add coffee and blend on high until smooth. Makes about 1 1/4 cups.
In 5-to 6-quart slow cooker, stir pork and pepper mixture; cover and cook on high 4 hours or low 8 hours or until pork is very tender and falls apart. With 2 forks, shred pork in slow cooker. Stir in beans with their juice; cover and cook on high 10 minutes or low 20 minutes or until heated through. Makes about 3 cups.
Prepare salad kit as label directs.
Serve pork mixture in tortillas topped with tomatoes, cilantro and salad kit.