Basically, the buildings were garnet, showing an image of triteness(sorry to use a derogatory word).

房子基本上都是暗红色，给人一种陈旧感觉。

It is a process by which words with appreciatory or neutral affective meaning fall into ill reputation or come to be used in a derogatory sense.

是一个词由原先表示褒义或者中性意义转为表示贬义过程。