It's that she's rotting; there is mushrooms growing on her, figurative mushrooms growing on her head.

她就像在腐烂;,就像有蘑菇长在她的脸上，她的脸除了些许白斑都是紫色。

耶鲁公开课 - 1945年后的美国小说课程节选

It's surprisingly easy to get a purple tie on eBay if you don't care much about quality."

如果你不是很在意质量的话,那么在易趣买条紫色领带是非常容易的"

耶鲁公开课 - 心理学导论课程节选