We chose the floor tiles. They were beautifully laid on tile with grouted seams in the store too, it was nice to look at.
The seams there were a light beige color. (Wall tiles don't interest me here).
But we were advised not to use light colored grout, as it will darken significantly from dirt/walking/wiping in 1-2 years.
However, the tiler who ended up installing the tiles said that the darkening after 1-2 years would not be as significant or as severe as described. Also, the "rubbing" is not as severe because of the narrow 3mm joints.
Visually, of course, I would like to use lighter colored seams.
I'm hoping for actual experience from you. Do you have lighter colored joints and have you worn them for several years? How does it look to you?