Personal preference - they both look great! But the black grout is more of a statement (which i love!)

Hi Sue, I think it would look amazing if you used some tiles with a bit of texture. The wood look tiles that are popular at the moment would be an example. If you chose a colour that toned in with your floor you would get a really nice cohesive look but with a bit of interest. I've attached a photo of a recent design of mine as an example. Just a suggestion!

Hi jgjustingordon63! Good luck with your reno - it can be exciting and scarey doing a reno! Have you considered doing subways a bit differently such as the pic below (I found via Pinterest)? This way, it doesn't matter really the size. Check with your builder/tiler re the fall if you want large-ish tiles for the floor. If it's a small bathroom, this might be an issue. In the pic above they've gone with small tiles which also looks really lovely. One other point I would make from experience...We used charcoal floor tiles AND grout. Bleach can discolour the grout, so you just need to be aware of that. There are ways around it and you can re-grout down the track (at an expense) but just giving you the heads up here! Good luck!! And do post after photos when you're done!

Ania, can you post photos when it is finished. It will be good to see those colours combined. I also love that inspiration photo and have it saved. I don't know what particular thing makes that bathroom stand out but it is beautiful. I want those exact same colours in my bathroom but a too scared to use timber tiles as I am scared they will date so am bringing in timber via accessories such as picture frames (I think). What is the grey tile in your photo and where is it from...it is very nice.