You don't have to match the metals in a room - particularly not to an exact shade. What you might do is focus on looking for a chandelier-type fixture, which will draw the eye more to crystal than to the metal.

A 3-light chandelier would work perfectly as an overhead light, would be small enough to suit a powder room (don't worry if it feels a little bigger than it should, it will feel more like a statement piece to guests), and will flow with the French-style faucet. On a chandelier, silver/chrome reads to the eye as glass, so it wouldn't clash. You could also opt for one with a white base, wood,
or with a brass base, which would read very similarly to the faucet you've chosen.

Here are some examples:

My Houzz: Mindful Makeover for a Victorian in Vancouver · More Info

Vintage Modern Living · More Info

Portola Ave · More Info

White Distressed 6 Light Chandelier · More Info

Otherwise you could look at "champagne" metal finish, which is a bit of a whiter gold color that might look ok with this faucet.

Newcastle 2-Light Vanity · More Info

3-Light Standard Bulb Bath Vanity Light, Winter Gold · More Info

5 Light Standard Bulb Bath Vanity Light, Champagne Leaf · More Info

But I agree that your options are way more limited with this finish, and you may do best to just push away from it and not even try to match.

Contessa-Bath Vanity by Maxim, Brass Finish · More Info

Designers Fountain Darby 3 Light Bath Bar, Weathered Iron · More Info

Alternating Current AC1196 Firefly 6-lt Bath Bronze · More Info

Elk Lighting 11691/4 Andalusia Traditional Bathroom Light in Aged Silver · More Info

OP - In the same predicament now! What did you end up going with?

IM ORDERING THIS TOO! WHAT METAL TO COMPLIMENT?

OP, lagniappleliving, Jessica Gillmor

also in same situation…any pointers to fixtures? what did you all end up choosing? Appreciate any info…so difficult to find anything 😩