I was researching this a few days ago as well, and found some articles that said this is not considered wrong from a design standpoint. It sounded like it was more acceptable to mix finishes now, and some people prefer the not so matchy look anyway. I was curious because I have 3 rooms that flow together and I have brushed nickel in two rooms. In the 3rd room I wanted to put in a ORB light. I think it will work fine. I actually just replaced the windows with ORB double curtain rods (and these flow through two rooms). I also read that if you can add at least a couple pieces in that particular finish it will look even better.... so I felt having the curtain rods and the light would make it work, but I think even without, it's ok. Buy what you love, that is most important!

I don't think the black hardware goes with the classic quality of your London Sky countertop. It's more classic and sophisticated than the black. I also think black will look dated sooner. And it would also be a big contrast either your white cabinets. Subtle always wins in the end.

What did you end up doing? I'm debating the same thing now for our powder room. It already has a white pedestal sink. We are painting the bathroom a very light beige and replacing all the current chrome with either brushed nickel or black (vanity light, towel ring, TP holder and faucet) and I can't decide which.

Nice room. I think the matt black would look really nice in there. A suggestion would be to replace the boob light. That said, I have 7 of those things yet, and cant find anything I want, to replace them with.