Baby Auggie had a white lightning mark on his forehead:
It went away when he got older, but since he's graying now, it's coming back more. You can faintly see it in photos now, sometimes better than others depending on angle/lighting:
My favorite part of Auggie, it's not a marking... but he has one little black freckle on his muzzle, right over his lip in the front. I'm not sure if you can see it...
Auggie and Georgie both have zig-zaggy collars, too.
Payton is really nicely marked - part of why his breeder originally wanted to keep him as her pick - but, uh, his muzzle is slightly crooked?
P also initially had a marking on his forehead that went away:
Miss Pepper has all kinds of spotty feet and toes, but I don't have any good photos. Because almost all my photos of Pepper look the same. And they are of her head. Staring at me like I am her whole world.
She also doesn't have a collar, but has this one white spot on the back of her head:
If you look close you can actually see a spotty toe in this one!