I see what you are saying and you are in your own way correct in thinking that but Contracts is not good dark it is blatant and not subtle.
I mean making everything overcast and rainy is basic and frankly amateur level. It bounces between a somewhat realistic dark with those old Hitman levels but the new levels are dark to an absurd degree.
Silent Assassin the bouncing between light and dark is frankly jarring to me it was like they couldn’t decide what route to take sometimes.
Colombia is the perfect means of showing the underground and the privelged at the same time. I mean after five games of hardcore criminals I didn’t mind chasing people who are less evil on a surface level. It is more realistic in HITMAN and HITMAN 2