The SM seems more tan to me. In the first litter, there was a DM that looked just like the DM - the doe I had returned, Hannah. In the second litter, there was a SM exactly like the SM.
I hope the SM is a buck. My friend is taking a free rabbit from that litter, but I told her it has to be a boy.
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I realized I had another kit like the less white one born to an earlier litter, pulled up the information and contacted the girl who bought him. She blocked me on Facebook and has completely ignored my email requesting an updated picture so I could compare him to Hannah.
They are still very different in colour. I have to go out to do some stuff, but when I'm back, I'll take updated photos of those two(and the other 5!) and dig up the photos of Hannah as a kit, and the other "opal" buck as a kit.
There's a fair bit of tan in the "opal"'s fur.