Best I can tell via wiki is that pants shouldn't be affected, only jerseys. So, if Denver wears their orange or blue jerseys we could stick with white on white.
https://en.wikipedia.org/wiki/Away_colours
National Football League[edit]
Most teams choose to wear their color jerseys at home, with the road team changing to white in most cases.
[2] White road uniforms gained prominence with the rise of television in the 1950s. A "white vs. color" game was easier to follow in
black-and-white.
[2]According to Phil Hecken, "until the mid 1950′s, not only was color versus color common in the NFL, it was actually the norm".
[2] Even long after the advent of color television, the use of white jerseys has remained in almost every game.
The NFL's current rules require that a team's home jerseys must be "either white or official team color" throughout the season, "and visiting clubs must wear the opposite".
[3] If a team insists on wearing its home uniforms on the road, the
NFL Commissionermust judge on whether their uniforms are "of sufficient contrast" with those of their opponents.
[3] The road team might instead wear a
third jersey, such as the
Seattle Seahawks' "Wolf Grey" alternate.