Thread: Colour change

I bumped into a local cocky yesterday, and he had a nice looking foxy with him. I asked where his little mate had gone that I was used to seeing in the truck.
Right here he says....pointing at the all White dog.

This foxy is 5 1/2 yrs old, and over the last few months has gone from having Black ears and face with tan edges, to completely White, including a small Black patch on her rump.
He has had many dogs over the years and has not seen or heard of this happening before.

Anyone know what may be going on? Dog is very fit and healthy and not old.