Yes, correct, the important thing I'm looking for is the colour of the mirrored reflection of the lamp and not the colour of the glass. I tried four white light led sources with different colour temperatures, 2 were cool white, (very white), 1 Warm (Like the old tungsten bulb) and 1 inbetween. They all produce a distinctively green reflection of the source in the 2013 B600 and a White reflection in the 2017 B600 S/N 0000.
At the moment I'm just trying to gauge if and when there was a change in these filters and if it points to a more concerning issue. I'll probably have to ask the question again with greater clarity. My next post will explain why
Steve