These are some nice photos, the BW looks fine to me, the sky is the right color, the hospital look a littel yellow and green couse of the tungsten and fluorescent lights used.
. . . the BW looks fine to me, the sky is the right color, the hospital look a littel yellow and green couse of the tungsten and fluorescent lights used.
The fluorescents inside are on the green side of the colour temperature range with the outside lights being on the warm (orange) side. It is hard to say however whether the walls just look green or actually are green.