What are you willing to do?

Are you willing to change out the vanity?

You can paint it a lighter version of your floor color. But, I would research how it’s done properly if DIY.

I would add handles to the drawers and doors.

you can also look into gel staining. You can make it an espresso color.

Old Masters has a gel stain called Carbon Black. You can still see the wood grain.

I think you are correct about having 2 mirrors under the 2 lights.

You could just frame your current mirror. But in my opinion, I think having two separate mirrors would look great. As eld6161 mentioned, a darker vanity would also look good!