I really don't think anyone should worry about what you ride to sturgis, we have been going for a few years now, and never had a problem, anyone will talk to anyone, just leave the colors alone, some of them are not nice.
the only rocket prob I hurd of was a guy doing burn outs on main, this went on for a while and people started to get pissed, when he went to leave, he popped the front wheel up twice, the third time a broom stick found it's way through his front rim, his buddies keys went flying into the crowd.
just ride with respect, and remember how many bikes and people are their, you won't have any problems, I have seen rockets parked on main street, right beside the HDs, BMWs, Hondas, Yamahas, and everything else, go you will have a blast.