As their colors continue to settle and they are calming down a bit, I have been able to sit and observe them more. The black saddle definitely extends into the dorsal on all of them. It doesn't go all the way to the top of the dorsal, but it definitely bleeds into the base of it. I can see this when they flare at each other during feeding time. One of them does, in fact, have a paler spot. She (I'm saying she because she's smaller and stockier) has lighter color in general. The funny thing is that I can see the black in her dorsal, but the actual spot on her body is pale, giving the impression that the saddle is bisected.I saw the extended saddle in pretty much all of the fish in the video, though it was really really pale in some of them. Even the pale fish at the 17-18 sec mark seemed to have it, but that could have been the black sponge showing through the dorsal.
They are lively little things. They aren't shy at all now that they associate me with food. When I walked up to the tank with a packet of bloodworms tonight, they sat right near the lid with tails wagging impatiently. It's probably the fastest turn-around I've ever had with a new group of cichlids.
I gotta tell you, this has made me really happy. It was an unexpected surprise. Best $42 I've spent on a group of fish in a while.