Hi, I have some very old colour film which expired 92 but has been in fridge most of the time. Obviously the colours will be bad, but will it be ok for very long night exposures - i.e. night sky and star trails??? The reason I ask is I have no other colour 100 film and wont be able to get any in time, so if it will be no good I will just load the camera with B&W film and not take any night exposures. Thanks.