One of Rick's niches was the creation of colorful, engaging promotion posters. 's niches was the creation 's niches was the creation 's niches was the creation 's niches was the creation 's niches was the creation 's niches was the creation 's niches was the creation 's niches was the creation 's niches was the creation 's niches was the creation 's niches was the creation 's niches was the creation 's niches was the creation 's niches was the creation 's niches was the creation 's niches was the creation 's niches was the creation 's niches was the creation 's niches was the creation 's niches was the creation 's niches was the creation