Aircraft comprising a passenger aircraft section, a first zone of the passenger aircraft section, a second zone of the passenger aircraft section, a plurality of windows and a window dimming system, the window dimming system comprising: a plurality of electrochromic devices adjacent the windows, at least one cabin attendant control panel operatively coupled to the first zone and the second zone, each zone (1010, 1020) including a zone control box (1012, 1022) operatively coupled to the cabin attendant control panel and to a power source, wherein each zone control box (1012, 1022) is adapted to receive control data from the at least one cabin attendant control panel and is responsible for relaying the control data to appropriate electrochromic devices of the plurality of electrochromic devices, wherein each zone (1010, 1020) includes a plurality of lighting control modules (1014, 1024), which are operatively coupled to a plurality of passenger control panels, wherein each of the plurality of passenger control panels is connected to an associated electrochromic device of the plurality of electrochromic devices and is adapted to be adjustably controlled by a passenger to vary the color or opacity of the associated electrochromic device, wherein the cabin attendant control panel is adapted to override the passenger control panels of a particular passenger or a selected group of passengers as necessary for a desired lighting condition, wherein multiple passenger control panels of the plurality of passenger control panels are coupled to one of the plurality of electrochromic devices, and wherein the window dimming system is adapted to establish a hierarchy of control authority between the plurality of passenger control panels. a plurality of electrochromic devices adjacent the windows, at least one cabin attendant control panel operatively coupled to the first zone and the second zone, each zone (1010, 1020) including a zone control box (1012, 1022) operatively coupled to the cabin attendant control panel and to a power source, wherein each zone control box (1012, 1022) is adapted to receive control data from the at least one cabin attendant control panel and is responsible for relaying the control data to appropriate electrochromic devices of the plurality of electrochromic devices, wherein each zone (1010, 1020) includes a plurality of lighting control modules (1014, 1024), which are operatively coupled to a plurality of passenger control panels, wherein each of the plurality of passenger control panels is connected to an associated electrochromic device of the plurality of electrochromic devices and is adapted to be adjustably controlled by a passenger to vary the color or opacity of the associated electrochromic device, wherein the cabin attendant control panel is adapted to override the passenger control panels of a particular passenger or a selected group of passengers as necessary for a desired lighting condition, wherein multiple passenger control panels of the plurality of passenger control panels are coupled to one of the plurality of electrochromic devices, and wherein the window dimming system is adapted to establish a hierarchy of control authority between the plurality of passenger control panels.