I'd avoid powder coat and get a fade from blue (or colour of your choice) at the front to metallic black at the back...which will blend nicely with the carbon fibre in due course.
I agree with Johnyboy666- deep blue metallic sparklage type thang........they had a 652 (iirc) at York Cycleworks when I got my first 550- nice blue colour- wish I'd stumped the extra £70 lookin' back now.............