color of the cast was very unusual
Orange you mean, like the Dutch worldcup in our streets at the moment



Darker red patch smells of aerial/surveillance to me
Surveillance films are sensitive in the NIR area so just the opposite. This Tonal 100 film is more reacting like Ortho film. In fact 625nm makes it possible to develop with a very dark red lamp on sight.

On the other hand the film should not be used with a red filter. Using a Yellow filter is possible.