this may sound weird, but I like and don't at all regret SG on my 12" rMB and if I could do it all over again, I would do the same.. it has a bit of a worn here and there look to parts of it that I'm ok with. Including the only port looking EXTRA worn on the inside which I like, since I've inserted and removed that cable 10 million times since getting it in spring 2015
but if I got a late 2016 rMBP onward, it'd almost have to be silver (and I like that my late 2013 rMBP is silver of course), 100% varying degrees of wornness to some ports more than others, considering they're all the same shape and port type, no bueno/no go. I couldn't cope. Plus looks clean