I think consistency is important, especially in a small space. If most of the finishes are chrome (what's your hardware on the vanity, by the way?), by installing a light or lights that are ORB, you are drawing attention to them and you might want to think about that. Seems like from what I've seen on the shows where people are fixing up to sell, keeping things neutral is a good way to go. And just because you can see the two lights from the LR, doesn't mean they should match; the lav and the LR are very distinct spaces, after all. If you feel its too cold in there with all chrome, perhaps warm up the space with a nice pop of color in your hand towel, mat on the floor if you are so inclined, or other small accessory. Good luck!

Call me old fashioned but I could never dull the finish of a polished nickel bathroom fixture. Real ORB is a beautiful artist's finish borrowed from traditional bronze statuary but its almost impossible to find and prohibitively expensive, What is sold today as ORB is one of a half dozen simulated finishes that contain no bronze and are difficult to repair if damaged. I would not use it where it would be touched a lot. My house was built in 1891 and has aged brass knobs in the first floor living areas, black porcelain knobs in the kitchen and hardwood knobs on the second floor. All bathroom fixtures are polished nickel installed in 1903.

Well. if you follow trends, then only mix metal finishes that are easy to change later. And aren't expensive to change. Like knock off lighting. Faucets and pulls are more long lived. But, scale back the scale from the giant oversized lights that have seemed to dominate people's Pins for the last 7-8 years. Scale can only be ignored as a room element for a while, but it always comes back to bite you. Giant brass everything is only popular now because of the very cold white and gray look that people feel is lacking in warmth. Because it is. That gray/white trend is changing too. Warm woods are making a great deal of headway in the style setting locations. And modern, not transitional, designs. Warm wood slab cabinets are the next hot thing. Like a mix of 60's -80's, but with less pop art influence. More Zen Modern. If you are interested in trends and want to get ahead of them.

I really like number 5, the white and gold one, but it's not right for the setting. Number 4 is very striking and would probably work. Number 3 is too mid/mod. For me, it's in the same category as 5 - cool but not right. Number 2 will be safe (three across). I don't like 1 or 6 at all. HTH