Spider-Man: Homecoming brought back the classic Steve Ditko design of the Spider-Man costume. Many fans were thrilled to see that look honored on the big screen and therefore were happy that Peter chooses to stay with that look by the end of the film.
Perhaps in a nod to that fan-favorite
costume, the Iron-Spider armor that Peter eventually dons in Infinity War more closely resembles the classic color scheme than that of the original Iron-Spider design. The comic version of the Iron-Spider is red with yellow while the film version sticks to the red and blue look.