I think the lighting make seeing coat details very difficult.
Chocolate NZ? :lol: Not too likely. They do seems to be large, and have a chunky meat bun shape.
Blue eyes and ticking suggests silver tipped steel, or self chin to me. Could one be a chocolate, and the closer a lilac?
Chocolate isn't uncommon in SF, and some lines have rew, so they could throw silver tipped steel the first generation. (Non-steeled colors are almost uncommon out of SF.)
Chocolate IS uncommon in meat breeds in general though, so most crosses wouldn't produce it first gen.