I noticed the Busa is short, the ZX12 sits alittle higher. Busa is alittle faster but I doubt I would notice the difference, I doubt I'd push 190mph myself. Bikes are beautiful, I agree.. so do alot of folks.
As far as the paint, I saw a bike in Fla a couple years ago(I think it was a Deuce) that was black with chains painted on it. I loved it but wasn't willing to part with $20k+ for a used bike. As much as I loved the paint on that bike, I'd hate to steal someone else's paint scheme. I was thinking of black with maybe barbed wire or something of that nature or possibly...
http://www.badasspaint.com/DiabloBlvd.htm (in red) or maybe
http://www.badasspaint.com/images/grimreaper112.jpg
I would consider a Harley paint job but I rather have custom.. Harley's paint would be less expensive and a semi-local dealer doesn't require you to exchange your metal(about $650 for my bike). Custom paint jobs can get quite pricey but.. it would be 'custom'.
I'm still looking around.