In a large 4-quart slow cooker sprayed with cooking spray, mix the macaroni, evaporated milk, milk, butter, salt, pepper, eggs and all but 1/2 cup of the grated cheese. Sprinkle the reserved cheese over the top of the mixture and then sprinkle with paprika. Cover and cook on low heat for 3 hours and 15 minutes. Turn off the slow cooker, stir the mixture and serve hot.