I specified a black toilet once. The owner told me it never looked clean. Embarrassing mistake.

I'm with you RES2 I have a black toilet and it never looks clean.

Not doing black toilet, but black handles and faucets.

I inherited oil rubbed bronze and uba tuba from previous owners. Every speck of toothpaste, soap bubbles, makeup, anything not dark in color stands out. I don't want to have to clean the fixtures every time I use the sink. Black fixtures look great but consider the kind of housekeeper you are before choosing black. Same goes for dark floors but x 100.

Fixtures have already been purchased and I had them in another home with no problems at all. They are matte black and they actually do not show anything so I am not worried about the maintenance.

Then what is your concern?

I would like to see tile, colors, vanity etc using black hardware,

Black goes with most colors. Did you search "photos" here on Houzz?

Here you go:

https://www.houzz.com/photos/bathroom/color--Black/query/faucets/nqrw/p/36?oq=black%20faucets%20in%20bathrooms

You have to scroll through the chrome ones, as there aren't that many examples of black.

And I dry it every time I shower.

Same for the sink fixtures. Yes, a lot of trouble but I don't mind.

Update: Just had my plumber here to replace the cartridge in the shower (hand-held was dripping). He commented that my drying the fixtures every time has preserved the finish. He says they go in houses all the time where the matte black is marked with white hard-water deposits in six months time. So, it depends on your water supply and your own level of commitment.

Not done yet, but these are my selections for a kids bathroom using black faucets and lights.

Perhaps work with a designer to create a whole, instead of a series of unrelated parts choices.

Madan JB , I would love to see how it all turns out😀