I have a metzer pair. They will be 2 yo this april. I find the hen has nice correct colour, the white on her head really just sticks to being around her beak and eyes and not past that. He is pure white exept for some gray on his primary and secondary flights.
Both are very calm, not really tame(handled them lots as babies but they never took to it like the africans) they tolerate you close and stay just out of reach. Neither bites when on the nest and he only hisses at me if he can't recognize me.
I can post pics tomorrow if you like?