I'm going to trade my shinies from B&W. In ORAS, however, I have a shiny Mesprit from that huge Christmas Eve/Day shiny givaway-bonanza over Wonder Trade (and I traded a Solrock for it, too). I started soft-resetting for a Shiny Primal Kyogre, but considering that I already have Shiny Kyogre and Groudon in B&W, I'm not sure why I'm doing that? Maybe I'm just masochistic.
Kyogre, Groudon, and Rayquaza are shiny-locked. But you can still bring your shinies from B&W and the orbs should still work.
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I finally got that shiny Shuppet in Mt. Pyre I mentioned before, along with a shiny Meditite from the Exterior.