How ‘Captain America: Brave New World’ Held Back on Using Red Until the Red Hulk Fight

variety.com:

Jazz Tangcay Artisans Editor SPOILER ALERT: This article contains discusses the ending of “Captain America: Brave New World,” now playing in theaters. “Captain America: Brave New World” director Julius Onah had one directive for his department heads: “deny red.” It might seem an impossible ask given the film’s villain is Red Hulk (Harrison Ford), but cinematographer Kramer Morgenthau says the creative gambit paid off.

He explains, “It was more in the production design and costume design, and I didn’t use any red light until you get to places like the lab or when you see Red Hulk, and by denying red for that much of the movie, it packs a punch.” The fourth “Captain America” follows Ford as President Thaddeus “Thunderbolt” Ross, previously played by the late William Hurt in “The Incredible Hulk.” Ross takes over the Oval Office and tasks Anthony Mackie’s Sam Wilson to reassemble the Avengers and be their new leader.

Meanwhile, President Ross is also taking pills for a mysterious condition: a ploy to inundate him with gamma radiation and transform him into the Red Hulk.

The transformation finally comes during a press conference in the film’s third act and an all-out battle ensues between Captain America and Red Hulk.