I have just had high gloss tiles laid in my home and the grout looks dirty (like the floor hasn't been cleaned for a long time) it is also crumbly in places. The grout colour should be Olive in colour. It looks horrible. We have the same tiles that were had laid at an earlier time and they look great. What has gone wrong? A different tiler was used each time. The first photo is of the tiles just laid and the other is of what we expected to get.