What does the rest of the room look like?

It's a mudroom so it'll just have white baseboards & a light "greige" color on the walls. Nothing else yet. This pattern repeats throughout but it isn't a huge area.

I would have used a darker grout, specially in a garage entry. I always try to choose a grout that matches one of the mid tones in a tile. Also, grout always ends up lighter than those little plastic sample sticks, so when I find the sample stick I like, I then pick one shade darker to end up with the look I wanted.