I like silver best to not bland but not to bright, but may plump for white/red/blue just for the fact its more visible to other road users!
In that vid above even though its poor weather bike looks amazing in silver!
I had a silver/grey Ford Capri in Germany. The one advantage that color has is that it doesn't show dirt as well as other less neutral colors. Black or white will show every spec of dirt and every bug splatter. I think the white/red/blue is the best looking. Never cared for red. It's nice on Ferrari's and a convertible's with a blonde inside! I love the blue on my Ninja. But I will be getting a black x anyway.