I Have the Silver 05. The only thing I can say, and this is totally a speculation, is that I don't think it's as visible. I ride with a buddy that has a a Z1000 that is Blazing orange pearl, and he even mentioned that I seem to get cut off a lot in traffic.
Sometimes I feel like the bike isn't "loud" enough to attract attention. So I'm getting new pipes to try and compensate. As I said, thats just speculation based on my observations. I have no real facts to back it up.
I like the silver better than the blue though.