On a serious note - YES, I notice stuff all the time.
FAFDM is the most surreal of Sergio's westerns I think and I always feel like I notice a little more of symbolism in various areas, like the cock crowing during the betrayal. This movie was like a forshadowing of his American Dream trilogy, yet it's surreal feeling is only matched by OUATIA.
I always wonder if the various colored lighting in the movie is used as any kind of symbolism, especially in the betrayal scene when Indio is constantly in and out of various colors of lighting. Sergio has never done that again, either. I like a director who uses lighting in that way, like Visconti in The Damned. The surreal lighting and photography when Monco gets up in the middle of the night is amazing, especially as it changes from room to room. That hallway
The lighting during the Indio intro and Mortimer's hotel room(After first meeting Monco) are very evocative of the characters