Because people from sinaloa keep fucking each other on the butt and pretend it's not gay.
>character goes to california
>quick shots of a plane flying overhead, palm trees and white girls in bikinis
>character goes to new york
>quick shots of people in heavy winter clothing, masses of unhappy people walking around the streets and the sounds of trains going by
>"Al right guys lets go"
>*happy upbeat rock music playing*
>*massive panoramic shot of the city*
Yellow lighting, to burgers, subliminally means "this scene is shot in some foreign, poor, shitskin country with a hot, arid climate".
Scenes are colour-coded for the burgers' convenience, making it easier to understand. If a country is depicted in yellow, it means you don't have to worry about locations there getting blown up in the film, since it's a shitty country full of terrorists who hate America.
Admittedly Mexicans do seem to love painting their houses yellow. But also consider that they love painting them with any bright colors whatsoever.
Green tint means it's a gloomy depressing place and something weird is about to go down