More of a trope about the styling and colour palatte of now classic films set in Mexican territories (but often filmed elsewhere):

  Spaghetti westerns were a series of western films pioneered by Sergio Leone in the 70’s mostly starring Clint Eastwood. They have a very specific style to them. Mostly shot on anamorphic widescreen, they developed a language using editing and framing for confrontations between the gunslingers as well as using and updating Akira Kurosawa’s style. A lot of them are straight up remakes of Kurosawa films (A fistful of dollars is Yojimbo, Magnificent 7 is 7 samurai).

  The films had a bit of a sepia look to them but that mostly came from the art direction and the wide open desert spaces they shot at. They would use a handful of shots from the west here and there but most of them were actually shot in southern Spain with Italian and Spanish crews.

  Widescreen aspect ratio, tight closeups (chin to eyebrows), quick cuts timed to the music (provided by the great Enio Moricone).

  The Good, the Bad and the Ugly is seen as the masterpiece of the series (known as the man with no name series). Another major one is Once Upon a Time in the West. Tareantino is heavily influenced by this stayle and pays direct homage to him on both Kill Bill Vol 2 and Hateful 8. This might be able to give you a slightly more modernized rendition of Leone’s style.

from: https://old.reddit.com/r/colorists/comments/rs7igu/spaghetti...

but you can find similar comments across many film boards.

Eh... just watch Breaking Bad and pay attention to all the scenes taking place in Mexico. You'll get the point. It hits as hard as the green tint in the Matrix movies when they are in the Matrix. They might as well all be Simpsons characters.