Porcelain Wood Effect Floor Tiles.. Grubby!

Recently put down some Porcelain Wood Effect Floor Tiles which are a matt finish Birch colour. Along with the white grout, they get so dirty so quickly. I dont like adding a gloss coating but wonder if anyone can advise a decent but reasonably priced matt waterproof coating and maybe a sand coloured grout?. Scrubbing every couple of days a pain. Dont want to end up recovering with something else like vinyl as would be a daft move on my part.
Thanks