Passage: The first central station (Central-Bahnhof) was built from 1845 to 1847. Its architect is not certain, but it is sure that the far-sighted city architect August Heinrich Andrae was involved in selecting its specific location and that the Hanoverian court architect Georg Ludwig Friedrich Laves and Ferdinand Schwarz contributed to it. It was built in a romantic-neoclassical style as a strictly symmetrical building. The massive masonry was covered in yellow plaster. Laves planned a new district, the Ernst-August-Stadt, for the area between Georgstraße and the railway. Roads led from several directions and converged on the station forecourt, the Ernst-August-Platz.

Question: What was the color of the masonry?
yellow