We chose Emser's Pietre Del Nord in Maine for our master bathroom. In the store it was much whiter and brighter than it's appearing now that it's up on the wall, which we think has a lot to do to the yellow-toned walls we found behind the old bathroom mirrors. (You can see in the photos that the tile hue looks different next to the blue walls.)

The tile is up, so there's no turning back now... Any tips on how we can tone down the yellow and help the tile appear brighter and whiter? Note:

- We get no natural light in this bathroom.
- We hadn't planned on adding additional vanity lights but are open to it.
- We are debating between painting the walls a cloudy / light grey-blue to pull out the blues in the floor or an aqua / seafoam green to pull out the glass in the mosaic.

Thanks in advance Houzz community!