White paper, blue book and red book. What color are these reports and documents?

A white paper is another name for an important document or report officially published by the government or parliament with a white cover.

As an official document, the white paper represents the government's position, paying attention to clear facts, clear positions, standardized writing, concise words and no literary color. In particular, the white paper has become an internationally recognized official document. White paper documents in different countries have their usual colors, and the cover is white, which is called white paper.