Which university's colors are commonly represented as Black and Gold?

The colors Black and Gold are prominently associated with several universities, including both Purdue University and the University of Iowa. Purdue, located in Indiana, uses Black and Gold as its official school colors, representing the institution in various athletic and academic events. Similarly, the University of Iowa also embraces these colors, showcasing them in their branding and sports teams. Therefore, the correct answer encompasses both institutions, acknowledging that each proudly displays Black and Gold as part of their representation. Nebraska, while having its specific colors of Scarlet and Cream, does not belong to this selection of universities known for Black and Gold.