The choice of materials is quite monochromatic from the beige Tyndall limestone from Manitoba, the beige, brown and green marble throughout the interior and light brown terrazzo for the flooring. There are only a few variations from this palette and are made to be very meaningful. They are the ornate white plaster ceilings of the waiting room, and green copper spire of the clock tower. Even the steel used for the overpass and the covered area outside are of a similar palette. The building is very approachable because of the materials chosen. They work well on the large scale to give the building weight and solidity but as one more closely inspects the materiality, the scale will change with the slight rustication of the limestone showing fossil evidence, and the veining of the marble unique in every square foot.