I hear what you're saying. Ferrari red for the 458 color is the color for that car. And in black it's just muted. Still AMAZING, but the 458 was born to be in red.
That said, I'm really not a fan at all of volcano orange. It's an amazing color in person; lot of depth and play in the light, but the overall impression doesn't do it for me. I like mclaren orange, very bright.
That, said, for the Mac, black is my favorite color. Not surprisingly, that's what I got. Silver is my second favorite color. On the Mac, it just makes it look a bit more menacing, and to me, its character comes out a bit more.
Also, the bright color contrast with the black intake, etc, makes it look less menacing in the bright colors.
Another car, I was very surprised, that I liked better in black (just saw it the other day) a black R8 10 extra with a dark grey blade, looked EPIC. Not sure why as I generally like that car best in white or silver with darker grey blade.
Anyway, colors are very subjective things. What's most important is you get the color that makes you happiest. And I suspect that will vary greatly.
I suspect silver/black will be most popular in the states, but would love to get the actual stats...