As you can tell it is in black and white and there is no red. A color copier was not available. This is from the 1930-something stack of papers so it uses what I believe are the 1940 census borders and the data for most of the other maps use mid 1930s data, so I don't think this is reflecting the 1940 census.
As you can see most of Shaw is primarily Africian American. The parts above U Street and below Florida Avenue, east of 14th St. past the TC and over to the RR tracks, and north of Massachusetts Ave are majority Black. There are also other parts of DC with a black majority, Foggy Bottom, what looks like half of SW and two chunks east of the river.