That may not be a true colour. White flourescent lights show green on colour film due to the limited spectrum emitted by the lamp. Your eyes see white because their sensitivity to different frequencies isn't the same as the film sensitivity. You could have the same issue with a digital image if the response spectrum of the ccd is different from the emission spectrum of the led lamp. It isn't unusual to need to change the colour balance in an electronic camera to suit different lighting conditions. Your brain does this automatically with what your eyes receive.