Like my hair, you need to get rid of the grey. or at least bleach it to platinum blonde.

Seriously if you must stick to the grey trend, repaint it a pearly light grey maybe with a pearl or silver metalic glaze. Paint all the walls. I love the mirror but i would a light over it

I would have some fun colored towel and accessories to switch out for the seasons. Put a decorative shelf over toilet with scent candle or jar of potpourri. Or tiny wall cabinet if you need storage. Then add artwork. to wall. i could see red poppies and red towels or soft rose shades working with the grey if you wanted to go beyond black and white.

If you really want to glam it up stencil a pearly white pattern over the dark grey or paint the red poppies on the other wall.

following

<?xml version="1.0" encoding="UTF-8"?><md>Here is the after picture, loving the transformation for a 4x5 powder room. Light, clean and simple

After

That sure lightened it up! Nice tile and vanity.