I don't have any Juliets with a SKU, so I can't speak from experience, but Oakley's site says Carbon/BI is 04-148 and X metal/BI is 04-146. I could be wrong, I'm just trying to help.
Really thankful for all the replies.... It really made my day! After checking out all your comments, I popped by his place a while ago and picked this up ... oh...to clarify...it's X-Metal/Black Iridium as some of you have rightly pointed out.
Thanks! Couldn't be happier. Next one would be a Plasma Juliet. Still very much undecided on XS, will skip the Penny but will look out for R1/R2 and XX too.