VFD colours often get massively changed by a plastic overlay. E.g. my VHS recorder Panasonic NV-HD625 has a VFD in yellow with some red segments. But with the brownish acryl front removed, the yellow is mint green instead. I also remember that other VFD in tabletop games even had white segments made by external filters. Hence looking at the naked VFD glass panel without case (e.g. from a scrap PCB) can be very deceiving.
