From the image, I'd say either silver or white, but in this case, I'd just stick with what matches the rest of your outfit. If you plan on making the patches/pins/whatever silver, then stick with that or vice versa.
Though, I personally fail to see why Hoshino would give them all black outfits and then thrown brown boots on them. >.>
Waaaaay tooo many orz
upcoming cons and events:
Fanime, AX, Yaoi-con (possibly), SF cherry blossom fesival, etc