I have a feeling the truffle is going to be just right! Either of the ones you have there would work but I think the truffle would be the perfect one. Will you be able to get a sample of that in the future? Or could you take a chip of your granite to the showroom or somewhere where they have a truffle something whether a sink or chip? Maybe someone could loan you one who has the chips and doesn't need them anymore. Fingers crossed for you!

I think metallic gray looks great! Good luck!

To follow up on this thread, I ended up going to a showroom and seeing the Vigo sink I loved in pictures/ online, and turns out - it was nice but not worth the extra trouble of jury-rigging it. I ended up going with the double Kraus 60/40 D shaped sink, with D-shaped for main sink and more mini-rectangular for the breakaway sink and I LOVE it! the main sink is big enough for most of our bigger pans, and the side sink is perfect for washing vegetables or smaller pans, filling our water filter carafe etc., and it's deep. What I love about Kraus is that it came with all these extras like a grid at the bottom, and strainers, and I bought a big hefty faucet as part of the package and it's really artistic and pretty. The whole package was around $600 from faucet direct - not cheap don't get me wrong, but including a matching faucet with the sink and the extras meant it looks good and cleans up well... after all the back and forth, deciding mostly among Vigo, Franke and Kraus (with a little of some other manufacturers in there) and wanting a 70/30 and "settling" for a 60/40, and not wanting a D-shaped - it worked out in the end.

The Home Decorating forum is really good with color, too (especially when working with a bunch of neutrals and various textures), so try to cross-post over there, too. :-)