My 46's are built and on the way. I like their graphics, so I went with white to match the white graphics on my bike (had the valve decal done in stealth). They came in lighter than expected too, Sapim CX Rays with the Novatec hubs (30g lighter than my alloys).
I also did the new grooved graphene brack surface. Several people have had positive reviews, so I figured I'd give it a try. I do a fair amount of climbing and any help I can get in the braking dept will be welcome. I don't think it's listed on the build options if you're on the global page, but you can request it after you place the order.