I would need to see some idea of the rest of the finishes in the home . I realltycan't see glass but I like a simple stainless color and as for style a lever is nice .

Levers are easier to use. Assume the doors are not hung, and you will be able to buy hinges as well as knobs. That would be a lot of black doorknobs. How about pewter instead of silver?

We need to see photo of the house and doors.

I personally like dark door knobs and hinges: black or Venetian bronze. We just moved into our new build and went with Venetian bronze.

There are a wide variety of finishes in our new home. Cabinet pulls/knobs and door hardware are all v. bronze. Fans are a brownish bronze finish. All faucets and bath lighting are brushed nickel. Entry and exterior lights are black. Kitchen island pendants, chrome and dining chandelier is antique brushed silver with copper accents.

It all works great together, and I spent way too long agonizing over the never ending choices!

For a 1950's tri level home I wouldn't do glass. Depending on the rest of your home you could do black or brushed nickel. Not seeing you home, but giving a nod to the transitional style I'd opt for the nickel. It works with anything.

The home has been updated to a transitional modern appearance.
Not trendy or Art Deco.
The doors have not been hung yet so all hinges will be the same as the handles, unless of course we chose glass handles.
We currently have brushed sliver door knobs on our white 6 panel doors that will be replaced with the 2 panel. All fixtures at this time are brushed silver, but that may change as well, but will remain light in color. I hope this information helps.