So, since my colors are pink, brown, and champagne, I have been debating using brown tuxes. I was thinking the GMs would have champagne vests, and FI would have a slightly darker brown, I think the swatch called it mocha or something.
But my mom, being the traditionalist that she is, is insisting on black tuxes, keeping the same vest colors. I even showed her pics of a friend of mine's wedding last sumemer who used the exact same colors (except the guys wore pink, which I'm so not doing to FI).
FWIW, one BM is in a champagne dress and the other BM is in a brown dress, PIB. They'll be carrying pink flowers, and the guys bouts are white.
And here's the tux, but not with that gold vest.
http://www.my-tuxedo.com/images/Solid-Brown-tuxedo.jpg

(Married)meganandshane.weebly.com~
(Planning)shaneandmegan.weebly.com