This was not a movie, but I think it was an episode of the show Unsolved Mysteries. It was aired in the late 90s, early 2000s, and was in both English and in Color. The only thing I remember about the episode was this guy takes a handgun and he shoots himself in the crotch. I believe he killed his wife or something, and he either tried to kill himself or make it look like an accident or something.
Sorry for the late reply but this might be about Charles Stuart, a man in Boston who killed his wife and shot himself (in the stomach), then told police they had been attacked by someone else. This was in the late 80s. I won’t go into the details of the case here but here is the wikipedia entry on it: https://en.wikipedia.org/wiki/Charles_Stuart_(murderer)
There was an episode of City Confidential on A&E about this case in 2000: https://www.imdb.com/title/tt0541977/
Coincidentally, the TV show Rescue 911 was filming in Boston when this happened, and recorded footage of the aftermath of the crime, however I don’t know if this was ever incorporated into anything that was broadcast.
That is not it. The reenactment shows the guy going into his garage and shooting himself in the crotch with the handgun.