If you refer to Vericolor III the "VPS" film, it is standard C41. I sent to my lab a roll of this film last year, expired 1994 or so, and they processed it in C41 as always and came out as always.
The "remjet" backing on the Vision film is black, not green.
Perhaps something happened with your film or with your process.
BTW this is ISO 160 film that was shot often at 100 back in the good days. From my results, i would have rated it at EI 25 if i wanted to shoot it again.