Unexplainable things like spawning a fish from a different genus, and an entirely different continent? EBA are American cichlids, not African. Not to mention the electric blues are a man made color variety. There's no possibility that you produced that by chance from a mix of African cichlids. I'm not trying to be rude here, but that is a specifically bred for fish, my guess is that you bought it young in one of your group buys and it's just now starting to color up. That's why it suddenly became noticeable from the rest of the group.
