I recommended Aquamix to neighbors, they DIY'd a large expanse of floor over several days of labor spread out over roughly two months. I looked at it with a critical eye a few weeks after they were done and it looked fine. I've been over their house several times since and nothing jumped out at me. It's a good indicator as they are about the most DIY-incompetent couple that I know. It's fairly common to break up a job like that into smaller work sessions.

Most welcome, Nutherokie. I hope you'll post photos of your finished bath. I really vacillate between grout colours that blend or contrast with the tile. Very different looks, but sometimes I regret not using the classic light grey. Renov8r, I don't, just at the moment. Although the bathroom has been technically finished for quite some time, we neglected to take final photos. And then, in the intervening time, our white oak vanity succumbed a little to the ravages of UV from all the windows, becoming just slightly orangey--just enough to clash with the neutral palette and make me crazy. I am determined to grey things down a little, both vanity and trim, before I take the final shots. But when I do...

Yes, you can use different colored grout for the floor, but as I said in the other thread, the Platinum would work well for the hex, as well. The only other color I'd personally consider would be the Delorean Grey. Which ever one you use, though, you want to use sanded grout on that hex tile.

Thanks, all. Prickly and linelle: Very perspicacious of you! I should have explained this. The tiles ARE indeed a bit different. I used the tiles that I liked least in the locations that will go under cabinets. I also did my test-grouting on areas that go under the cabs. Ergo, the right-hand (grouted) side has less vibrant tiles, with lighter reds and darker tans. This effect is more dramatic in other areas of the kitchen; I chose the "least bad" area to show. I believe I got all the grout haze off. Thanks, annsch and breezy. I am so bad at these things that it is helpful to have them discussed! The concept of the red-and-white checkerboard was meant as a subtle nod towards vintage kitchens in general, with Marmoleum/Linoleum floors in mind in particular. One realization I had since asking this question on this thread was that a grout that blends in likely comes closer to this look (since Marmoleum didn't have any grout lines to delineate the checkerboard). If you look at the picture above, you could imagine the right-hand side was marmoleum, but you couldn't imagine the left-hand one was.