https://www.cnet.com/news/in-avengers-endgame-new-trailer-captain-marvel-and-thor-have-fun-first-meeting/ > The trailer opens with a stranded-in-space Tony Stark (Robert Downey Jr.) recording a message for his Earth-bound fiancee Pepper Potts, reminiscing about his first days as Iron Man and falling in love with her. (But still no sign of Pepper in the current timeline, however.) > It kicks off a series of mostly black-and-white flashbacks to the various Avengers' past adventures -- like Steve Rogers' pre-Captain America World War 2 life and the now destroyed Asgard -- and the Snappening by Thanos in Avengers: Infinity War. Fascinatingly, the only color we see in these parts is red.