Is the Platinum the Laticrete Platinum? If so what about Silver Shadow? It is a very soft gray that is almost white, but looks great with Platinum. Are you using cementitious grout or epoxy? I know many have used SS for their light or white tiles. Here is Silver Shadow epoxy on the bottom vertical grout spaces. The top area was grouted with a 50/50 ratio of Platinum and SS. The middle row was with Raven and SS. Note that there is a halo around the marble, like it is still wet. Epoxy can do that with marble, I just looked at my tile boards after over a month of drying and the halo is still slightly there with the darker grouts. But not as marked as in this picture. So that is something to consider. Here is the Silver Shadow epoxy with my bright white tiles. With these tiles the SS looks light gray, but with the tiles above it looks almost too white for my taste: I took Laticrete epoxy Platinum and mixed it with a little bit of Silver Shadow for an in between gray for my black slate floors. It is in a 3:1 ratio. The colors mixed very nicely. The grout sample on the left is the SS and the one on the right is the Platinum. It didn't take much SS to lighten it up significantly. If I did this over I would just have used Platinum. My DH really likes the combo. He thinks it ties in with the tub. It is relative isn't it, because it is not white at all but appears white. I will be having a marble listello, as seen above in the sample board, with my white tile wainscot. I might mask the marble off when I grout the white field tile with Silver Shadow. Then I would plan to come back and grout the marble with a reverse blend of Silver Shadow 3parts to Platinum 1 part. Nothing like trying to complicate things. That's one of the benefits with DIY. But if I was paying someone to grout, I would not consider these mixes.

Exactly! btw. I sound like a total rube I know, but no one ever told me I have to squeegee my glass to keep it from etching. Get the girls a squeegee and have them go to town after every shower. It will keep the grout cleaner as well as save you from having to see permanent spots on the glass door.

Yes, it does help dramatically in situations I have seen. The tile pros have very large rotary machines, like carpet cleaning machines, but specialized for tile. Some have a special machine with a narrow brush that goes back and forth on just the grout, like a gigantic mechanical toothbrush. The chemicals, detergents, and hot dirty water are sucked up by the machines, followed by rinsing thoroughly. They can seal the tile and grout again, I highly recommend it for easier cleaning afterward. A large kitchen and three bathrooms cost a few hundred dollars in a low cost of living area. It took all day. BTW, there are special hand-held electric scrubbers they use for wall and shower tile.

The internet is terrible for comparing colors - everything looks different on every monitor, but from what I am seeing the Gray tile is a dark gray that leans green. The floor tiles are light, not white. They look to be a light yellow/orange - great next to the gray green tile. Then I look at your flooring sample and the lighter areas are pulling pink. Not great with the yellow orange tile flooring. It may not be quite as bad if we were not looking at it next to the orange under toned carpet. Either lay down a white sheet over the carpet or look at the flooring on top of the light tile and on top of the gray tile. It may still pull pink but may not be as pink without the carpet color. Still reads pink to me.