Shouldn't cost you any more. I also just ordered a Gelato White Pop 1.2, with red/ivory interior and it costs no extra, however did purchase when already built. If they say its not possible, well clearly it is. (there are a few in the eastern states already available and also one demo model too.)
Rodbeee, what delivery date have you got? or do you know what status yours is at? I havent been able to get many details besides that its been built (status 30) and was ready for shipping 2-3 weeks ago. Was hoping to find out more but havent been able to. I was given September 30 as the shipment arrival date.