For your consideration. And maybe your tiler's?

My Houzz: Organic Minimalism in a Denver Redo · More Info

Here are the peel and stick tile sheets

Only do a contrasting grout if your walls are perfectly FLAT. Otherwise, you will have issues with it showing how badly they are not flat.

I actually like it better with the light gray, as in the picture above by simstress. I think it will look great!

Yes, me too!

Light grey (or is it gray?) will look fab. In fact, I'm considering removing the white grout from my hex tile floor in favor of grey. :)

@Sammy, it depends where you live! Grey in UK/Commonwealth, gray in America! :)

White gets dirty so easily. Go with gray.

Wow...thanks!!! I'm on the right track then. Why do sub-contractors think they are decorators and mess with my head until I realize that is what is going on.......

Contractors always have opinions and IMO whitre grout is always going to get dirty go gray but not too dark.

100% of the contractors I know or have employed choose the "safe" route 100% of the time. I think it's a personality trait of people who go into that line of work, reinforced by years of experience with unhappy clients who deviated and paid the price or horror stories from colleagues.

Notice I say contractors I have experience with. If you are a contractor who is not afraid of risk, please accept my acknowledgment that you are different!!

:-D