This single still is from the widescreen version of ?A Detective Story?, one of the Animatrix animated shorts. It has been considerably scaled back from the original material.

As 'Find the Red Queen' shows, a world with a palette leaning towards the dark and depressive, does not have to be entirely gray scale. A little splash of colour, can have impact without seeming too out of place, providing it is grainy, dirty, and somewhat washed out, just like the rest of the world.

This works in cinema and VR alike.

Link: Animatrix: A Detective Story