There is a map used for "Facilities" that still has issues reported time and again in Beta. Sometimes its "dark spots" where the lighting just cuts out. Others its mysterious non existant high intensity lighting causing things to look very high contrast. Or maybe causing said "dark spots" as well.
But mostly its light cones hanging from the fixtures in every room. Its not "artistic" and its not atmosphere. Its a mistake with the settings on the lights. (i bet the same person who did this did the CO maps with the same issue!) . I am familiar with graphics and know its a mistake and what settings will cause these issues. Below are a couple examples but it is in every room on the map. Every time I get one of these maps my user experience is degraded by the amatuerish lighting boo boos.