How typical is sin city of its genres

Sin city is a hybrid ,a film that combines two genres .These genres are film noir and comic book. there are many obvious conventions to show these two genres within the film. these conventions are shown through narrative structure and themes, character roles and types, mise en scene, iconography and visual codes, for example film noir protagonists tend to be hardened by life they have a cynical outlook on the world and they seem to know what is coming as if they have seen it all before. they do not hope for a positive outcome they only see the darkness ahead. this is true of this particular film as both Marv and harrtigan the two main protagonists have this persona and share these views. for example Marv says "hell is waking up every day and not knowing why you are here." this quote also links in with another theme of noir films in that they represent the time in which they were made. noir films reflect the period just after the cold war when all the men came back home and there was a lot of mistrust ,fear, and a strong sense of paranoia a lot of the men had problems adjusting to normal life. marv is a perfect example of this , he has lost his sense of belonging, he does not fit into this post war era and it is even said in the film that he was born in the wrong times and that he should have been a gladiator in an ancient battle field.
the film noir genre has very distinct iconography , the setting are often dark sidewalks often featuring neon lights, in built up urban areas in a hostile city. this is the exact type of setting we see through out sin city, very closely fitting into these noir conventions . another common feature is the use of rain which is very common in this particular film often shown in the dark points of films during scenes of death or loss.
noir films often use a lot of darkness and shadows to represent their characters emotions and intentions. the villains are often shown in darkness however as the protagonists in film noir are not strictly the good guys we often see shots of them with half their face in shadow when they are doing something wrong even for the right reasons. this is a visual representation of the characters dark side. 
the voice over narrating of the characters is a common convention of noir films . in sin city this plays a major role in the narrative ,each character explains their own background, motivations and plans through out the film giving us a deeper insight to them and helping us follow the often complex and non linier narrative that we see in noir.
throughout sin city the trench coats are mentioned a few times , marv makes reference to the coats a few times. trench coats are a common iconography of noir films however as this film is a hybrid these coats tie in with the comic book genre as well. after a character does something heroic we see a low angle shot looking up at them with the coat waving in the wind symbolising a hero's cape which is a convention of comic book hero characters. we do not see this shot when the protagonist is doing things hat are not heroic such a killing or brutality showing the anti hero side to the character.
comic book films often use classic prop character roles. often featuring a clear hero, villain and princess who the hero try's to save. this is true of sin city however as it is a hybrid this convention is distorted. we still have the three clear hero's and they all have obvious villains all trying to save or avenge a female however the heroes in this particular film are not always as strictly heroic as the comic book genre would normal have them be and the damsels in distress are not always what they appear to be either in the fact they they could be the femme fatal character used in noir films that do not feature in the comic book genre.