I know it is not an HBCU, but I found these facts interesting about GA Southern who started with a limited budget but has grown to be one of the best in the country.
Plain Uniforms: When the program was revived in 1982, the school did not have a large budget and coach Erk Russell ordered solid blue helmets and asked the players to put a white strip of tape down the middle. At the time of the restart of GSU Football the equipment budget was so limited that only practice pants could be purchased. Hence, players wore the same practice pants as game pants. A simple limited monetary approach which has become a nationally recognized tradition The uniforms consisted of plain white pants and blue jerseys without names. With the subsequent success of the Eagles, the basic simple design of the uniforms has remained the same. Sports Illustrated has ranked the uniforms as being the 3rd best in college football.
Yellow School Buses: When the football team was started again in 1981, money was tight. In fact, there wasn't enough money to furnish transportation. The Bulloch County school system sold two buses for a dollar each to the team. The buses have been used by the team ever since as transportation to the Allen E. Paulson Stadium. It has become a rich tradition and many gather before the game to watch the arrival of the yellow school buses. Little known to many outside of the program and still privy info, "The Valley Song" sang by the team en route to Paulson Stadium. "Erk" would always ride the first bus and soon after arrival he would often ask how the song was on the other bus, an indication of how prepared his team was to play.https://www.reddit.com/r/cfb/comments/1dzdn4/132_teams_in_132_days_georgia_southern_eagles