I had gunmetal on my alpine white and didn't like it at all. On a space gray, absolutely, but didn't work on the white. I would either leave it as silver or go black, which is what I dipped mine to. Normally I'm not one to be bold, but I love the way it looks as a package, personally. Bonus, brake dust is no longer obvious. I can always rip it off, but no chance anymore.
And here's the stock gunmetal color. Ferric is darker and I just don't think any shade of gray works against the white.
