Citations in the World Almanac (listed by cover date; color information is from the previous year): red/steel (1917-1935)
According to a 1927 list, the Intercollegiate Bureau of Academic Costume (IBAC) had by that point assigned a scarlet hood lining with a steel gray chevron to Virginia Union University. “Steel gray” was how the IBAC described a satin lining fabric in a medium shade of gray, which was used for institutions having either medium gray or steel as a school color.
This description was unchanged in subsequent IBAC lists and also appeared in a compilation of hood lining information by Kevin Sheard published in Academic Dress and Insignia of the World (1970).
In 1900, students at Virginia Union University selected red and steel as their school colors to symbolize struggle (red) and strength (steel). The college’s red was bright, like scarlet.