Hi again

I'm dreaming of next week when the tile gets put in. The shower and wall are a beige travertine looking tile (italiano romano walnut) and the floor is dark brown wood like tile - sort of between cherry and walnut -5 1/2x26. From reading past posts I gather I would be best to pick one of the mid tones from the tile for that grout colour. Is that right?

I am not sure about the floor grout colour. Should I match the dark as close as possible, or go a tone lighter or or a tone darker to set the tiles off a bit??

Unless advised otherwise, I plan to have a normal grout line rather than an ultra thin one, as I try to have things as idiot and destruction proof as possible.

Sally