User blog comment:Hermione Chase/"The Blood of Olympus" Expectations/@comment-7153535-20131027200734/@comment-4727448-20131027213023

Hmm, maybe.

As for the jacket-less covers, the first series is teal, brown, blue, red, black. In HoO, we've had teal, blue, red, brown, so I expect BoO to be black like TLO.