Well, while we're killing time, I really do think there'll be a Deep Ocean Blue version of the reader, mainly because of the Part Number.
Consider the part number of the white Libra 2 is
N418-KU-WH-K-EP while the black one is
N418-KU-BK-K-EP. The old Libra H2O follows the same convention, with the white one being
N873-KU-WH-K-EP and the black one being
N873-KU-BK-K-EP. Finally, the Clara HD has
N249-KU-BK-K-EP and it only came in black.
Meanwhile, the Dutch site has the
Kobo Clara 2E Deep Ocean Blue E-reader as
N506-KU-OB-K-EP and I think the
OB stands for Ocean Blue. I haven't been able to find anything on Google yet, but if things follow convention, I
assume the black version will be
N506-KU-BK-K-EP just like the other black models.