What color should be painted behind the slogan "Serving the People" at Xinhua Gate?

The red color is painted behind the slogan "Serving the People" at Xinhua Gate. At the Xinhua Gate in Zhongnanhai, Beijing, "Serve the People" is engraved on the screen wall. The red background is glittering with gold edges, and guards stand solemnly. Therefore, the red color is painted behind the slogan "Serve the People" at Xinhua Gate. Xinhua Gate, located on West Chang'an Street in Beijing, is the main entrance of Zhongnanhai. This is a classical two-story wooden structure building with seven rooms in width and double eaves and glazed tile rolling sheds on the top of the mountain.