Nice one! I was so close to going with that colour myself.
I ordered a 320d, and ended up changing it to the 330d... the sports transmission is included and some other options I ordered were cheaper, so the £5k difference dropped down to around £3k off the top of my head.
(not that I'm trying to get you thinking about that!)
F10 M5 Competition Frozen Austin Yellow / Sakhir Orange
Loaded, Akra carbon titanium exhaust, Carbon trim, Carbon spoiler, RKP carbon front lip + diffusor.
F15 X5 M50d - Mineral White w/Mocha Nappa Leather. Loaded, 599M 21" wheels, all M-perf. accessories.