If the levers on the closet are the same kind as the doors on the rest of the house, I would do them in ORB. I would also leave the inside of the bathroom door ORB to match the rest of the house. Changing one side of the bathroom door won't help, since the bedroom side of the door will also be in the bathroom when it's open. If you want the closet to match the bathroom, you could use the same style pull as you are using on the vanity,so it's a cabinet knob/lever rather than a regular door lever.

Oooh good idea. My vanity knobs will be too small for the double doors but they are a style that I could probably find something larger in polished nickel! Assume the hinges should be polished nickel as well? (I need to order the unit, it comes with hinges so I want to specify the correct finish when I order). thanks!

One thing - the door opens into the bathroom and there is a changing area/ hallway type space that is between the master bedroom and the bathroom. the bedroom door to that area does have ORB levers like the rest of the house.

My first thought is to keep it polished nickel.

I have a BR off of my kitchen and on the kitchen side I have a black finish lever and on the bath side I have a silver patina finish lever. I just bought new hinges for the door and they are polished stainless to match my polished chrome and polished stainless (grab bars) bath fixtures. My levers are Emtek and sets can be bought with 2 different handles. If I had to do it again, and I knew where all of my finishes would end up, I would have got a shinny polished silver lever for the bath. But I bought the lever prior to the remodel. I still love the patina lever finish though.

We have ORB levers/hinges throughout our new home on white doors, also primarily white cabinets with ORB. However, in the master bath we used dark cabinets with brushed nickel. I never even thought about the idea of switching the hardware on the doors in the MBa to brushed nickel. I wanted the continuity of having all the doors alike, plus the ORB does match the dark cabinets in the MBa. I think the lack of continuity with the door levers would have bugged me. It's not something that sticks out like a sore thumb to have it the same ORB--in fact, I think it looks good. The MBa door is often open into the MBR, which has ORB on that door. We have a walk-in closet (with door) off the MBa as well as the door into the toilet stall--all ORB levers. Of course you should do what you like, but IMHO, stick with ORB.

I agree with sajafr. All the doors (levers/hinges) should match. The rest can be in polished nickel. I've seen this done in a lot of the pictures on Houzz. It doesn't have to be so matchy matchy - a mix does look good.