Need help with master bath paint color
I agree that grey may work, but I would probably buy one of those small samples for $3 at one of the big box stores and try out the color first before doing it all. If you like the grey, you can always go to Ben's and get a gallon and start your project.
It's hard to tell color sometimes with pics, but my daughter has a similiar tile in one of the bathrooms in her condo. Her first choice was also grey, and we bought a small container and it didn't work with her tiles. She went with a lighter blue color and it really looks good. She used dark blue towels and a rug with browns and various shades of blue and it looks really classy and comfortable.Good luck!