Although not related to Christianity, here is a post by Hans van Roon at Mongols, Ancient China and the Silk Road about some of the latest terracotta warriors discovered in Xian, China, which show more traces of their original colors than previous figures. I'm reposting it here in order to show that many examples of colorless art and architecture from the ancient world were originally brightly colored. Something to keep in mind today as artists create new art based on ancient sculpture and the Gospel!
article at National Geographic as well as their recent photo gallery of painted warrior details. The article explains how the original colors crumble from the terracotta surfaces within four minutes of excavation– "vibrant pieces of history lost in the time it takes to boil an egg." So finding a way to immediately stabilize them was imperative.
The article is also accompanied by this short "fly by" video showing a reconstruction of the warriors at Xian with their vibrant colors intact: