Yeah, first glance it looks like chinchilla due to the surface color, but that wouldn't have tan on the ears and nose... That fur shot looks like a silver-tipped steel... But steel shouldn't have any tan, either, because the chinchilla gene that makes a silver-tipped steel prevents expression of most yellow pigments... I thought about the possibility that it was just the rustiness that some chinchilla (and STS) rabbits have when they're young, but usually that spreads across the nape, not the ears and nose.
Otters do have tan in the nape area, sometimes having a pretty extensive nape triangle; the doe still looks like a broken otter on my screen.
However... the baby lion lop does have some suspicious darker patches on his body and ear that appear in one of the photos:
View attachment 38842
I don't know if those are shadows or what, but looking closely at the picture of the hindquarters, I think I
might see tan not only on the lower flank, where you might see it in an otter, but also higher up on his hindquarters:
View attachment 38843
I'm always open to blaming harlequin for inexplicable colors and patterns.
While I don't really see it on the doe, it wouldn't surprise me to find out the sire was (or carried) harlequin.
Do you see the areas I've arrowed on your little lion? It's a lot easier for you to tell what's there, given the trustworthiness of photography and computer screens.