Byron is a gold sable ECS. A breeder here told me he has a "Wechselnase" which is, loosely translated, a "changeable nose".
It can go from being a solid dark to a two-tone. This is what it looks like at the moment:
A change in the weather seems to have an influence. Does anyone know more about this?
P.S. The pads on his feet are all dark (and stay that way!)