[
  {"note": "#778: Preferences › Graphics › Colour vision. A mode applies at once, Cancel puts it back, OK keeps it, Restore Defaults on Graphics resets it, and the window keeps its size."},
  {"click": {"handle": "titlebar:preferences"}},
  {"expect": {"prefs": {"dialog": "General", "color_vision": "off"}, "same_width": "prefs:window"}},
  {"widget": "Graphics"},
  {"expect": {"shown": "Colour vision", "prefs": {"dialog": "Graphics"}, "same_width": "prefs:window"}},
  {"widget": "Off"},
  {"widget": "Deutan"},
  {"expect": {"prefs": {"color_vision": "deutan"}, "same_width": "prefs:window"}},
  {"widget": "Cancel"},
  {"expect": {"prefs": {"dialog": null, "color_vision": "off"}}},
  {"key": "Comma", "cmd": true},
  {"widget": "Graphics"},
  {"widget": "Off"},
  {"widget": "Tritan"},
  {"widget": "OK"},
  {"expect": {"prefs": {"dialog": null, "color_vision": "tritan"}}},
  {"key": "Comma", "cmd": true},
  {"widget": "Graphics"},
  {"expect": {"shown": "Tritan", "same_width": "prefs:window"}},
  {"widget": "Restore Defaults"},
  {"expect": {"prefs": {"color_vision": "off"}}},
  {"widget": "OK"},
  {"expect": {"prefs": {"dialog": null, "color_vision": "off"}}}
]