Hi there. I bought this completely matte Honeyee shell recently for $14, but I know for a fact that the back is a North American back. This irks me a bit, having a NA shell on a Japanese-only case. I know Japanese matte backs exist outside of the rare Honeyee shells (ex: Here), but I can't find a Japanese Crimson/Black or Cobalt/Black shell online. Could anybody help me on this endeavour?