Alternatively, maybe the user is referring to old films preserved on blue film stock? I'm not sure.
Wait, the user might have misspelled or misused the term. Maybe they meant "classic" instead of "blue," or "blue" as in a specific color trend. Alternatively, could they be referring to "blue films" as in classic films in color? Early color films were often in Technicolor, and some have a blue tint due to the technology. For example, the 1939 "The Wizard of Oz" had a sepia tone in Kansas and a blue and yellow in Oz, but that's more yellow. indian blue film video
Alternatively, maybe there's a specific list of films known for their blue color palette. For example, "Blade Runner" has a lot of blue tones, but that's more modern (1982). However, if the user is looking for vintage (older) films, perhaps from the 50s or 70s that use blue tones. Alternatively, maybe the user is referring to old
Another angle: maybe the user is referring to films from the "blue period" in art history, but that's a Spanish artist's period (Pablo Picasso). Not sure how that connects to movies. Maybe they meant "classic" instead of "blue," or