I haven't seen this little quirk mentioned yet, so I'll add it here: Contrary to giraffe/hex being very faint and showing up practically only on the butt (and mane), Rose here shows how the pattern
should be showing a lot better. Probably still a tad too faint, but at least it's visible, for some reason.
To the best of my knowledge, it's the only color that displays anywhere near properly. I'll edit this in a few minutes if I find any others, since I'm checking now, but I don't think I will.
Edit: It appears on a few other colors, which I will document down here. It's easiest to see it on the shoulder.
Here it is on Sanguine. It's very hard to see due to the dark colors, but it
is there.
Here's Auburn showing it.
Spring, oddly enough, although it's still way too light. It's almost invisible.
Swamp, too.
Aqua looks almost like the inverse problem, but it is kinda neat.
Sky, just barely strong enough to see.
Lavender, also just barely visible, but visible nonetheless.
Thistle.
Midnight.
Coal is
super faint.
Ice, just barely.
I think I caught them all. Notably, the ones like Violet also seem to be missing their second tone that they usually have. I suspect that what happened here was the wrong colors got selected, just like Butterfly on the breeds with dark manes. Hopefully, that means it should be an easy enough fix!