Evidently this 85 is well suited for this kind of architectural photography. What camera?
From a pictorial point of view, I think it is important that a night scene be slightly on the darker side, though. Otherwise we might believe it was done on a dull day in daylight. Thus, a little more contrast and shadows ever so slightly more darker will do the trick. Including some light trails from passing cars helps too.
If I had to choose between the two versions, I would prefer the colour one because it to me conveys more impact of the scenery. The nocturnal mood is less present in the b/w image.
